Rambus and Infineon have settled out of court

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Apr 18, 2004
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Originally posted by: ribbon13
That was completely random. Are childish implications you're forté? How's this: 'Doess your mommy know you're neffing ATGH? You better behave otherwise she will shift+delete your pr0n collection'

That was pretty good, thanks for showing me up
I'll have to use it at a later date.
 

Ice9

Senior member
Oct 30, 2000
371
0
0
Originally posted by: razor2025
Huh? What kind logic is that? Please Ice9 check your logic before hittting the "submit" button. If it wasn't for the messed up IP / Patent system we have today, these stupid lawsuit wouldn't even have happened. Breaking the law doesn't neccesary equate with being unethical. Neither does using the law to your advantage can be considered ethical.

How so?

I'll tackle your post point by point. Please read carefully and completely.

Rambus developed the idea behind the RDRAM interface back in 1988. The same principles were applied to SDRAM during JEDEC in the mid-90's when they did their cherry-picking. Rambus was never allowed to present at JEDEC, but every company attending knew about RDRAM from NDA's dating back 5 years before Rambus ever attended... Where's the flaw in my logic?

When was Rambus supposed to reveal they owned this technology if they were barred from presenting?

Doesn't it appear odd to you that they would invite Rambus to be a member of JEDEC, yet NEVER allow them to present? It certainly seemed odd to the Judge at the FTC.

What RAMBUS is doing right now is completely unforgivable. Instead of striking out profitable liscencing deals (Next-Gen consoles), they would rather sink enomous amount of company resource into hitting the "sue-happy" lottery for loyalties from 5 years ago. Any company that base major or entire revenue off of lawsuits are POS in my book. Look up SCO.

It's unforgivable to want to be PAID for your invention that was blatantly stolen from you?

There is no parallel here. SCO is attempting to claim that portions of UNIX code are present in Linux. They (SCO) have so far not been able to prove this in a court of law beyond a reasonable doubt.

Rambus HAS been able to prove infringement, as they have just been awarded summary judgement in the hynix case. The companies who are infringing on their patents ADMIT they are infringing. Where's the flaw in my logic? What's in question here is whether or not Rambus took advantage of their position in JEDEC or whether JEDEC took advantage of having RAMBUS being a member and never letting them present.

The bottom line here is that everything Rambus did during their tenure in JEDEC was 100% legal. What the members of JEDEC did was NOT legal (collusion, price fixing).

Like I said before, Rambus made plenty of mistakes. But they never broke the law, and they wanted to work with these companies to manufacture their product. Infineon, Hynix and Micron however DID break the law in an effort to kill Rambus as a company.

Also, because I'm a consumer, I don't see how RAMBUS winning the case will benefit me. RAMBUS stock owners might get a hefty profit when RAMBUS wins, but it's crap deal for consumer. If RAM factories has to pay loyalties to RAMBUS, they'll be sure to jack up the price to compensate for that. But I guess, it's pointless to argue against someone who has vested interest in such a POS company.

Rambus RDRAM royalties were 1.5% of manufacturing cost, which essentially makes your cost $1 or $2 more. RDRAM was superior and less costly to manufacture than SDRAM (samsung and mitsubishi both testified to that fact in the FTC trial and the virginia trials). It was SO much faster than SDRAM, it makes you wonder why JEDEC even bothered. If RDRAM was cheaper to manufacture and was so much better than SDRAM, wouldn't that $2 premium be worth it to you as a consumer? Are you sure it's my logic that's flawed here?

What would you rather do, pay $9,000 for a Yugo or $10,000 for a ferarri?

And this whole RAMBUS - JEDEC relationship. It's stupid and naive. They knew that RAM factories were bunch of Mafia thugs, but they seemed to be naive enough to think that they might get to cut a liscencing deal if they showed their stuff at JEDEC. What kind of dumb@$$ company will allow bunch of other company to see their IP in a forum like meeting? Especially, when all the members are mafia-like entity? It's like RAMBUS wanted their IP to be stolen.

No. It's not like that at all. Rambus doesn't manufacture anything. They are a company of engineers. They want memory manufacturers to manufacture the stuff and bring it to market as part of a strategic partnership. This is why they shared their innovations under NDA in the first place (in 1990). They are a tiny company that has brilliant ideas, but no cash for fabrication plants. They simply didn't have the resources to manufacture mass quantities of RDRAM, XDR or any other type of chip. They supply the brains, the memory manufacturers supply everything else.

They were invited to JEDEC with the premise that they would be allowed to present their technology for standardization (meaning RDRAM would have been the standard). JEDEC rules stated that they are willing to license technology deemed as "proprietary" and use it as part of their standard. Rambus was there to present their technology to JEDEC for consideration. However they were barred from presenting their technology.

Had Rambus been allowed to present their technology, the memory manufacturers would not have been able to try and steal it, as it would have put them "on notice" that they were infringing on someone else's technology. At the time, Rambus thought they were there for the purpose of presenting. They found out soon enough that it wasn't why they were invited.

Read the FTC docket on this. This is why Rambus won there.

Also, RDRAM FAILED because it could not compete against SDR/DDR during the time it was unveiled.

No. RDRAM failed because the memory manufacturers lied about production schedules, production costs and demand. Memory manufacturers said to Intel there was no demand for the stuff. How could that have been if Dell had to charge $1200 per 128MB module if you wanted a 256MB system?

This is currently the topic of investigation of a Department of Justice probe. Michael Dell himself complained about these memory manufacturer tactics and said they were engaging in "Cartel-like behavior". You may have heard about several Micron executives being subpoenad and several Infineon executives going to jail in connection with this.

Oh, and one other thing. RDRAM hasn't "failed". It's still in plenty of products being manufactured today (HDTV's, PS2's, high-speed routers, fiber multiplexors, several other products that demand high speed and low pin counts).

Add the fact that AMD was smart enough to keep their Athlon platform in SDR and DDR. These two things brought down the viability of RDRAM as a product.

At one point, AMD was a Rambus licensee. However, at the time they had single-digit market share, and less than 15% market share now. AMD might be regarded as some to be a "major player", but the sad truth is that as good as AMD products may be, they cannot compete with Intel's marketing muscle & corporate ties. This is why having intel on your side is a far better thing than having AMD on your side.

Intel intended to scale their P4 architecture into very high FSB/Clock. So, on paper, RDRAM looked like a good RAM technology to pair up with their new NetBurst (netcrap) architecture.

Bash Netburst and Intel all you like, they own 80% of the desktop market to this day. And RDRAM *WAS* a good technology to pair up with the P4. It was a good technology for a great number of things. It's still in use today for high bandwidth applications (like HDTV's). It would have been a lot more beneficial if it were given the chance. But the memory manufacturers colluded to keep it out of the market. Again, this is the topic of a DOJ probe.

However, due to Intel's overzealous marketing and craptacular CPU/Chipsets, their older generation (P3) and AMD's newest Athlons b*tch slapped early P4. If RDRAM was still around and supported by Intel today, they might be a good match against DDR due to the high FSB achieved by P4 currently. But.. that's not the case. RAMBUS was too arrogant to let RDRAM mature and wait till Intel had a solid platform to utilize their RAM.

The only "immature" chipset released for the RDRAM platform was the i820. A single-channel 133mhz front side bus is simply not going to make an 800mhz dram look incredible. RDRAM had already matured in the market as it was in a previous product (the Nintendo 64), which SGI chose as their graphics memory. It proved itself there, and that was what turned Intel in their direction in the first place. i820 was more a "proof of concept" thing, but it wasn't until the P4 showed itself that RDRAM proved itself as a viable PC technology.

Nope, they had to be greedy and rode the Intel wagon. They thought that by using Intel's enormous marketing machine and its (practically) monopoly status, they could've been the RAM technology top-dog. Unfortunately, things didn't work out like they planned, so Intel dumped RDRAM like a used whore. And we aren't even talking about the cost of RDRAM ownership at the time. Even without considering the cost of RDRAM, their performance alone sucked major.

No. It was Intel who approached Rambus, not the other way around. Intel said they had an interest in their technology to mate with the Pentium 4, with a test run in the late-model Pentium 3. Again, read the court transcripts when you have the time and want to know the truth.

The performance of RDRAM on the P4 was better than anything out at the time. i845 for both SDRAM and DDR never caught up speed-wise, and Granite Bay still couldn't keep up. It wasn't until DDR scaled to 400mhz years later that RDRAM was finally bested by DDR. And even then, PC1200 RDRAM killed it even though Grantsdale was never released to the public. SiS promised a chipset for PC1200, but again - engineering samples made it to reviewers but SiS dropped it before it could see the light of day (no doubt thanks to the memory manufacturers who colluded to keep IT out of the market too).

Intel made the right decision regarding discontinuing RDRAM support. Memory manufacturers had effectively squeezed it out of the market (again, the source of a DOJ probe into their anticompetitive behavior). Rambus had always contended that this was going on, and now they have evidence to prove it thanks to Mitsubishi, and now (surprise!) Infineon.

But from intel's point of view, they couldn't sell CPU's if memory manufacturers wouldn't manufacture RDRAM. Thus, the 845 was born to support SDRAM, which memory manufacturers WERE manufacturing in quantity.

One major thing that stands out though. WHY did RAMBUS not sued the RAM factories in the very early 1990?

Simple. Rambus doesn't manufacture anything. They NEEDED the DRAM manufacturers to bring their product to market. Also, in 1990, there was no such thing as SDRAM. It was all EDO SIMMs, and intel was complaining that memory speeds weren't fast enough to keep up with CPU scalability. It wasn't until 1992 that Rambus was invited to JEDEC, and it took them some time to figure out exactly what was going on. Once they found out that their patents were being cherry-picked one by one, they did the only thing they could do - amend their patent claims to cover SDRAM so their intellectual property would be protected from theft.

While Rambus did this, they did everything they could to get JEDEC to allow them to present their technology for consideration. To this day Rambus is the only company in the history of JEDEC to have been barred from presenting their technology. They were never given a clear reason as to why. In 1996, Rambus gave up and left JEDEC stating that they would persue any avenue to protect their intellectual property.

If they knew that their had their IP stolen after the 1990 JEDEC, why haven't they filed suit immediately afterwards? Or even few years after? Instead, they waited till 8-10 years later, and brought out the lawsuits hoping to catch some loyalty lottery that they were "owed" since then.

This is the correct timeline:

1988 - Rambus invents RDRAM
1990 - Rambus files patents for RDRAM and shares their technology model with Memory Manufactures in hopes of bringing it to market. This is done under NDA.
1992 - Rambus invited to JEDEC (this is shortly after Willie Meyer of Infineon wrote the "Deadly Menace" memo and sent it to Gordon Kelly, chairperson of JEDEC)
1995 - JEDEC finalizes the SDRAM standard
1996 - Rambus patents are GRANTED by the USPTO and subsequently leaves JEDEC.

The lawsuits did not start until 2000-2001.

At the time, there were 11 memory manufacturers that were manufacturing SDRAM. They all received letters stating that they were infringing on Rambus' original 1990 patent filing. Of these 11 companies, 8 of them agreed to pay royalties without much fanfare (Hitachi gave a little fight because they wanted better terms, but ultimately paid up). The last three (Infineon, Micron, Hynix) decided to go right on infringing.

Hope this explains things for you.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,540
10,167
126
Originally posted by: Acanthus
Unlike DDR, as clockspeed increases, LATENCY DECREASES, strange that PC1066s "horrible latency" took intel 2 years to beat in performance, and the roadmaps for rambus memory wouldve had a far superior memory to what I875 was up against had production and support continued.
Aren't you forgetting, that every time you add another RIMM, you necessarily increase your latency? And that this limitation is inherent in the RDRAM interface protocol? When you start to add server-size memory amounts, rather than compare a single/pair of DIMMs/RIMMs, that's when the real worst-case RDRAM latency scenarios become more apparent.

Not to mention, given that Intel's general SMP design is for multiple CPUs to share a single bus to the main DRAM array, and that with more CPUs in an SMP server, the memory-access patterns get even more random and less localized than with a desktop machine.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,540
10,167
126
Originally posted by: Ice9
There is no parallel here. SCO is attempting to claim that portions of UNIX code are present in Linux. They (SCO) have so far not been able to prove this in a court of law beyond a reasonable doubt.
You're right. It would be a nearly exact parallel, had SCO taken open-source Linux code, developed by others, and then patented it, as part of their code (eg. their Caldera Linux distro), and then turned around and sued other Linux distro vendors, because they were violating SCO's (assumed to be valid) patent.

I noticed that in this thread, I don't think that you mentioned that Rambus went back and amended the claims of their already-filed patent application, to include elements that they learned would be part of the standard/part of other mfg's products, while in JEDEC. That's what is so un-ethical about the whole situation. It's almost akin to insider-trading, but in a totally different manner. Yes, the patent, once granted, may be all legal-like, and validly enforcable, but that doesn't excuse the sleaziness of it all, nor does any other un-ethical behavior from the other mfgs towards Rambus.

PS. I still haven't seen you prove your claim that it is illegal to mention that a patent has been applied for something. Show me the law.
 

DrMrLordX

Lifer
Apr 27, 2000
21,958
11,491
136
Originally posted by: Acanthus
Unlike DDR, as clockspeed increases, LATENCY DECREASES, strange that PC1066s "horrible latency" took intel 2 years to beat in performance, and the roadmaps for rambus memory wouldve had a far superior memory to what I875 was up against had production and support continued.

What's strange to me is that dual-channel DDR ever emerged as a faster memory solution for P4 platforms. The P4 was practically "marketeered" to make RDRAM look good(seeing as how the hefty memory bandwidth offered by RDRAM never really helped P3s). It never should have lost to DDR, and yet, it did.

And, while Intel did eventually ditch RDRAM support, I don't believe they were very happy about doing it.
 

DrMrLordX

Lifer
Apr 27, 2000
21,958
11,491
136
Ice9,

Seems to be that a reduction in legal costs and a sweetheart licensing deal with RAMBUS, Inc. is more than worth the money that Infineon is paying as a part of this settlement. XDR is gonna be big business if/when the PS3 takes off. Also, as others have said, the fruits of this settlement are far below that which RAMBUS, Inc. expected.

As for ol Judge Payne, you can call him a defiler of courtrooms all you like. He's still a judge, and what you or I say about him means nothing. A victory in his courtroom is still a victory. Infineon won in Judge Payne's court, and then they beat RAMBUS, Inc. at the barganing table.

I'll be taking my investment dollars elsewhere. I do hope you make good on your investment, really, but I'll be playing some other part of the market while you do it.
 

ribbon13

Diamond Member
Feb 1, 2005
9,343
0
0
Speaking of next-gen consoles, my money is on ATi stock. ^^ The engineers behind the next gen consoles are in the know. nVidia is being pwned.
 

RanDum72

Diamond Member
Feb 11, 2001
4,330
0
76
It took Dual Channel DDR runing at 200mhz FSB to beat RDRAM running at 133mhz FSB.
A P4 with a 133mhz FSB ('quad-pumped' to 533mhz FSB in Intel-speak) running synchronously in a 875-chipset mobo is still slower compared to it being paired with a 850E mobo.

Its kinda sad that the 'bad guy' turned out to be the one who was shafted in the first place.
 

Sunner

Elite Member
Oct 9, 1999
11,641
0
76
Originally posted by: RanDum72
It took Dual Channel DDR runing at 200mhz FSB to beat RDRAM running at 133mhz FSB.
A P4 with a 133mhz FSB ('quad-pumped' to 533mhz FSB in Intel-speak) running synchronously in a 875-chipset mobo is still slower compared to it being paired with a 850E mobo.

Its kinda sad that the 'bad guy' turned out to be the one who was shafted in the first place.

I agree.
I'll admit, I was onto the Rambus bashing bandwagon as well, back in the day of $1000 128 MB RIMM's and i820 motherboards.

I've yet to see anyone disprove Ice9's claims with anything other than opinions, while Ice9 has given plenty of links, both in this and other thread.
 

Ice9

Senior member
Oct 30, 2000
371
0
0
I noticed that in this thread, I don't think that you mentioned that Rambus went back and amended the claims of their already-filed patent application, to include elements that they learned would be part of the standard/part of other mfg's products, while in JEDEC. That's what is so un-ethical about the whole situation. It's almost akin to insider-trading, but in a totally different manner. Yes, the patent, once granted, may be all legal-like, and validly enforcable, but that doesn't excuse the sleaziness of it all, nor does any other un-ethical behavior from the other mfgs towards Rambus.

PS. I still haven't seen you prove your claim that it is illegal to mention that a patent has been applied for something. Show me the law.

Larry, it was all Rambus could do. They asked on multiple occasions to be allowed to present. They were constantly denied, having been the only company to have been barred from doing so.

They saw the ones who WERE presenting using their IP, so they amended their claims to cover their claims. They knew what was going on, they knew they were being robbed. Why should they let these companies get their IP for free?

If you showed these companies your technology under NDA, then saw them apply YOUR principles to the SDRAM standard, you would have covered your own ass too. It's ok to be a fan of open standards. It's not ok to condone using an open standards setting for the purposes of IP theft.

The references regarding patent application legality is covered in the CAFC decision written by Judge Randall Rader. Refer to his decision, as he outlines where they would not be able to legally divulge their patent applications in the first place.

 

Ice9

Senior member
Oct 30, 2000
371
0
0
Originally posted by: VirtualLarry
Originally posted by: Acanthus
Unlike DDR, as clockspeed increases, LATENCY DECREASES, strange that PC1066s "horrible latency" took intel 2 years to beat in performance, and the roadmaps for rambus memory wouldve had a far superior memory to what I875 was up against had production and support continued.
Aren't you forgetting, that every time you add another RIMM, you necessarily increase your latency? And that this limitation is inherent in the RDRAM interface protocol? When you start to add server-size memory amounts, rather than compare a single/pair of DIMMs/RIMMs, that's when the real worst-case RDRAM latency scenarios become more apparent.

Not to mention, given that Intel's general SMP design is for multiple CPUs to share a single bus to the main DRAM array, and that with more CPUs in an SMP server, the memory-access patterns get even more random and less localized than with a desktop machine.

This is only partly true. When you add another RIMM to ANY GIVEN CHANNEL you increase your latency. Adding RIMMs to separate channels DECREASES your latency as you are concurrently fetching across channels.

Keep in mind that RDRAM's pincount allows for multiple channels on single modules, and that its pin count per channel is 25% of DDR's. There was a specification for a 4 channel RIMM that also never saw the light of day. It would have offered the same pin count as a single channel DDR module, but with 4 times the bandwidth and far less latency.
 

Ice9

Senior member
Oct 30, 2000
371
0
0
What's strange to me is that dual-channel DDR ever emerged as a faster memory solution for P4 platforms. The P4 was practically "marketeered" to make RDRAM look good(seeing as how the hefty memory bandwidth offered by RDRAM never really helped P3s). It never should have lost to DDR, and yet, it did.

And, while Intel did eventually ditch RDRAM support, I don't believe they were very happy about doing it.

It didn't "emerge" as a faster memory solution for the P4.

When dual channel DDR showed up on Granite Bay, RDRAM still spanked it by a large margin. In fact, DDR400 only marginally beat PC1066 RDRAM in dual channel mode, and needed 128 pins to do it as opposed to RDRAM's 32.

Pincount is one of the biggest engineering hassles motherboard manufacturers face, since every trace to the module has to be an identical length to maintain signal integrity (well, that was until Rambus invented Flexphase). This makes dual channel DDR boards much more difficult to design than RDRAM boards. Add in the fact that RDRAM was capable of supporting multiple channels on a single module, you begin to realize that DDR made less and less sense.

But it doesn't really matter now since RDRAM was effectively killed as a PC technology. RDRAM still had the longest run of the fastest memory bandwidth available for the PC. If you look at bandwidth benchmarks today and compare them to dual channel DDR, RDRAM still hangs with the best of them.

Had PC1200 hit the market as expected, it would have easily bested dual channel PC3200.
 

Ice9

Senior member
Oct 30, 2000
371
0
0
As for ol Judge Payne, you can call him a defiler of courtrooms all you like. He's still a judge, and what you or I say about him means nothing. A victory in his courtroom is still a victory. Infineon won in Judge Payne's court, and then they beat RAMBUS, Inc. at the barganing table.

I'll be taking my investment dollars elsewhere. I do hope you make good on your investment, really, but I'll be playing some other part of the market while you do it.

Well, to a point you are right - but those victories no longer mean anything. The case was settled out of court - which means the remaining infringers can't use any case law from those court sessions.

Payne's indiscretions were well documented, and he's had a number of judicial complaints including this one. There's good judges, and there's bad judges. Payne was just a bad judge. And it's nearly impossible to have a judge removed from a case, much less from the bench.
 

Ice9

Senior member
Oct 30, 2000
371
0
0
Originally posted by: sandorski
Did Rambus win anything?

In order to understand the reasoning behind their decision to settle, you have to follow what Payne did in his own courtroom. He botched things for Rambus at every opportunity. It was flagrant, it was obvious, and the reasoning was simple.

Prior to his being a judge, he was a partner of the same law firm that infineon hired as counsel. I'm certain this was no coincidence. Infineon probably hired them the moment the judge was assigned.

While I'm not sure I would have handled this the same way, the Ars article doesn't outline any of the surrounding facts in this case. It doesn't address what Payne did to screw Rambus. It doesn't address how much royalty was at stake comapred to the remaining infringers (Infineon is a much smaller player compared to Micron and Hynix).

It does address the fact that this case is no longer usable as case law in the other two infringement trials - one of which has already won summary judgement in Rambus' favor. Of course it doesn't mention this until the very last sentence They understate the value of this.

The street has followed this case closely. Everyone knew Payne was giving Rambus a raw deal. The reason the stock was up on the news of the settlement was because Rambus was finally rid of that stick in the mud judge.
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
Super Moderator
Aug 22, 2001
29,325
23,755
146
The memory makers have been fleecing us for years so I have no sympathy for them, zero. Being the greedy bastards they are, they try to get new tech without paying for it, because heaven forbid they should have to pony up a small portion of those illegaly acquired profits for it! :disgust: Now I am somehow supposed to feel as though these companies are being wronged and that I am having the cost passed on to me? Give me a fvckin' break. The ethical and legal course they should have been following was to have paid for the rights to the tech, not been engaing in price fixing, and not colluded to rape both Rambus and the consumer.

Rambus was able to turn the tables on them and is over the course of time getting some recompense for the injustices perpetrated on them, well I say good for them! Why should I bear any animosity towards them for beating "Old Scratch" at his own game? Furthermore, the dirty S.O.B.s settlements are pennies on the dollar of what they have made off their unethical and illegal activities, so they still get to laugh all the way to the bank with nothing more than what amounts to a slap on the wrist :thumbsdown:



 

Megatomic

Lifer
Nov 9, 2000
20,127
6
81
Previously I was misinformed regarding Rambus vs. JEDEC, but having read some facts and looking back at how much I've spent on RAM I have to agree with DP. Screw 'em just like they've been screwin' us.
 
Jun 14, 2003
10,442
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whatever happens i think im on ice9's side, he seems to have read up a great deal and knows what hes talking about, he has an answer to anyone who trys to put the RAMBUS = BUNCH OF CVNTS. keep it up man!

on a side note, i have a rig with 768mb of RDRAM in it. its only a 2.4Ghz P4 but for some reason it feels a hell of alot nippier than my athlon 64 system with a gig of DDR when just pootling round windows etc, everything seems to load faster.

this stuff overclocks like stink too

im jus being lazy now, but why did RDRAM cost so much? was it rambus doing it or was it the people making it? im sure i read in this thread some where that some company (samsung?) said it was cheaper to make RD than it was to make SD RAM
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Originally posted by: VirtualLarry
Originally posted by: Acanthus
Unlike DDR, as clockspeed increases, LATENCY DECREASES, strange that PC1066s "horrible latency" took intel 2 years to beat in performance, and the roadmaps for rambus memory wouldve had a far superior memory to what I875 was up against had production and support continued.
Aren't you forgetting, that every time you add another RIMM, you necessarily increase your latency? And that this limitation is inherent in the RDRAM interface protocol? When you start to add server-size memory amounts, rather than compare a single/pair of DIMMs/RIMMs, that's when the real worst-case RDRAM latency scenarios become more apparent.

Not to mention, given that Intel's general SMP design is for multiple CPUs to share a single bus to the main DRAM array, and that with more CPUs in an SMP server, the memory-access patterns get even more random and less localized than with a desktop machine.

I tested between 2 and 4 rimms when i was running them on I850 back in the day, there was less than a 1% performance loss, it was still far faster than DDR.
 

JackBurton

Lifer
Jul 18, 2000
15,993
14
81
Originally posted by: Sunner
Originally posted by: RanDum72
It took Dual Channel DDR runing at 200mhz FSB to beat RDRAM running at 133mhz FSB.
A P4 with a 133mhz FSB ('quad-pumped' to 533mhz FSB in Intel-speak) running synchronously in a 875-chipset mobo is still slower compared to it being paired with a 850E mobo.

Its kinda sad that the 'bad guy' turned out to be the one who was shafted in the first place.

I agree.
I'll admit, I was onto the Rambus bashing bandwagon as well, back in the day of $1000 128 MB RIMM's and i820 motherboards.

I've yet to see anyone disprove Ice9's claims with anything other than opinions, while Ice9 has given plenty of links, both in this and other thread.
Yep, I was the same way. But when prices dropped I picked up an i850 board with some PC800 RDRAM, and it performed nicely. When Asus came out with their i850E board and 32bit PC1066 RDRAM modules, DDR ram was behind in the memory speed game. I liked RDRAM and wish it could have stuck around. The P4s and A64 could have better performance by now, but I think RDRAM would have benefited the P4 moreso since it relies more on memory bandwidth.
 

JackBurton

Lifer
Jul 18, 2000
15,993
14
81
Originally posted by: Acanthus
Originally posted by: VirtualLarry
Originally posted by: Acanthus
Unlike DDR, as clockspeed increases, LATENCY DECREASES, strange that PC1066s "horrible latency" took intel 2 years to beat in performance, and the roadmaps for rambus memory wouldve had a far superior memory to what I875 was up against had production and support continued.
Aren't you forgetting, that every time you add another RIMM, you necessarily increase your latency? And that this limitation is inherent in the RDRAM interface protocol? When you start to add server-size memory amounts, rather than compare a single/pair of DIMMs/RIMMs, that's when the real worst-case RDRAM latency scenarios become more apparent.

Not to mention, given that Intel's general SMP design is for multiple CPUs to share a single bus to the main DRAM array, and that with more CPUs in an SMP server, the memory-access patterns get even more random and less localized than with a desktop machine.

I tested between 2 and 4 rimms when i was running them on I850 back in the day, there was less than a 1% performance loss, it was still far faster than DDR.
Yep.
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Originally posted by: otispunkmeyer
whatever happens i think im on ice9's side, he seems to have read up a great deal and knows what hes talking about, he has an answer to anyone who trys to put the RAMBUS = BUNCH OF CVNTS. keep it up man!

on a side note, i have a rig with 768mb of RDRAM in it. its only a 2.4Ghz P4 but for some reason it feels a hell of alot nippier than my athlon 64 system with a gig of DDR when just pootling round windows etc, everything seems to load faster.

this stuff overclocks like stink too

im jus being lazy now, but why did RDRAM cost so much? was it rambus doing it or was it the people making it? im sure i read in this thread some where that some company (samsung?) said it was cheaper to make RD than it was to make SD RAM

RDRAM costed more than DDR because memory manufacturers charged too much for it, period.

Samsung stated the RDRAM was cheaper to make than DDR in court. Rambus' royalty fee per chip was 1.5% ( im taking that from Ice9s earlier comment).
 

DAPUNISHER

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Originally posted by: otispunkmeyer
im jus being lazy now, but why did RDRAM cost so much? was it rambus doing it or was it the people making it? im sure i read in this thread some where that some company (samsung?) said it was cheaper to make RD than it was to make SD RAM
As Ice stated " RDRAM failed because the memory manufacturers lied about production schedules, production costs and demand. Memory manufacturers said to Intel there was no demand for the stuff. How could that have been if Dell had to charge $1200 per 128MB module if you wanted a 256MB system?

Originally posted by: Megatomic
Previously I was misinformed regarding Rambus vs. JEDEC, but having read some facts and looking back at how much I've spent on RAM I have to agree with DP. Screw 'em just like they've been screwin' us.
Same here, it wasn't until after Ice posted a thread on the topic probably over a year before the one he linked, that I took the time to research the matter a bit. Add the lawsuits over price fixing and I arrived at the healthy conclusion that ram makers are the :evil:

I am so disenchanted and irate about being fleeced for thousands of extra dollars the last decade+ on ram purchases that I would almost welcome a Wal-Mart type dynamic hitting the industry i.e. the retailer being able to strong-arm and dictate to the manufacturer.

 

VirtualLarry

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Originally posted by: Ice9
When dual channel DDR showed up on Granite Bay, RDRAM still spanked it by a large margin. In fact, DDR400 only marginally beat PC1066 RDRAM in dual channel mode, and needed 128 pins to do it as opposed to RDRAM's 32.

Pincount is one of the biggest engineering hassles motherboard manufacturers face, since every trace to the module has to be an identical length to maintain signal integrity (well, that was until Rambus invented Flexphase). This makes dual channel DDR boards much more difficult to design than RDRAM boards. Add in the fact that RDRAM was capable of supporting multiple channels on a single module, you begin to realize that DDR made less and less sense.
Interesting, that in this thread, you made no mention of RDRAM's lower pin-count (per chip), until I brought it up, and then tout it as somehow one of the superiorities of RDRAM, when it truth, in terms of desktop/workstation DRAM arrays, it was never really an issue. In order to even be able to compete, latency-wise, RDRAM would essentially have to be set up as one RIMM/memory channel, which is making inefficient use (read: expensive) of the system chipset's memory-controller die-size resources. You essentially need 4X the number of memory controllers, to support 4 RIMMs, with similar latency to 4 DDR DIMMs, that could be handled with one memory controller (although better bandwidth with two). But once you start adding memory channels to RDRAM systems to make them competitive in the latency dept., you've just killed any potential cost savings due to lower pin-counts, and in truth, those savings are only primarily for chip-level interfaces, not module/system-level interfaces. Why? Because systems have already long been designed with support for 72-bit non-RDRAM memory in mind, so that there is no additional marginal cost increase over RDRAM to use non-RDRAM, at least with respect to design/R&D costs. PCB mfg costs themselves are primarily related to size and number of layers, and it doesn't matter how many wires are routed per layer, they are all etched at the same time per layer. The only real cost is in simulation/design/layout, and since supporting the higher number of signal lines necessary for non-DRAM solutions was already standard practice, RDRAM offered no real advantage here in the PC space.
Originally posted by: Ice9
But it doesn't really matter now since RDRAM was effectively killed as a PC technology. RDRAM still had the longest run of the fastest memory bandwidth available for the PC. If you look at bandwidth benchmarks today and compare them to dual channel DDR, RDRAM still hangs with the best of them. Had PC1200 hit the market as expected, it would have easily bested dual channel PC3200.
Except that latency matters in the x86 world, at times more than bandwidth. The fact that a single-channel AMD64 system with on-die DDR memory controller, can hang with a dual-channel DDR P4 system (with twice the theoretical effective DRAM bandwidth), and still be just as competitive on real-world apps, should tell you something right there. Similarly between the comparisons between high-end DDR, and DDR2. Because of the lower latency, DDR is actually faster in some cases.

 
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