AMD post-Bulldozer x86 CPU architecture

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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
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And what product do you think it's paying the bills today, the big core products that have been losing money and share every segment they are in, or the cat cores, which offer good value proposition compared to Intel's offers and have been opening *new* markets for AMD? AMD management would be very dumb if they were not to pursue something the cat core line, even if it's a little beefier than current cat cores.

Are we speculating or do you have numbers to share with us ??
 

Homeles

Platinum Member
Dec 9, 2011
2,580
0
0
Are we speculating or do you have numbers to share with us ??
There are, of course, certain things that do not need documentation or credit, including:

  • When you are using "common knowledge," things like folklore, common sense observations, myths, urban legends, and historical events (but not historical documents)
  • When you are using generally-accepted facts, e.g., pollution is bad for the environment, including facts that are accepted within particular discourse communities, e.g., in the field of composition studies, "writing is a process" is a generally-accepted fact.
https://owl.english.purdue.edu/owl/resource/589/2/

You don't need to question things that you know are true, just because you don't like the guy and want to crap on his argument.

Seriously now, what is making more money for AMD? What has been a greater success? Their big cores, or their little cores?
 

SlowSpyder

Lifer
Jan 12, 2005
17,305
1,001
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What's the point of AMD achieving what are you describing with FX and imploding its balance sheet in the process? Because this is the most important achievement of the FX line, not developing a product that can match Intel's mainstream on raw performance (despite the asinine power consumption).

And what product do you think it's paying the bills today, the big core products that have been losing money and share every segment they are in, or the cat cores, which offer good value proposition compared to Intel's offers and have been opening *new* markets for AMD? AMD management would be very dumb if they were not to pursue something the cat core line, even if it's a little beefier than current cat cores.


I don't think they would have to go bankrupt producing it. They have many good 'off the shelf' technologies that they can use and/or improve on. I think their focus should be on mobile, maybe a beefier cat core as you say, and then scale up from there for the desktop parts. But that's just me playing armchair CEO.

I think some of you guys are thinking I'm trying to argue that AMD has done well and/or made good decisions with what they brought to market... I'm not. But, what they do have can be competitive in plenty of situations despite their much smaller R&D budget, and the good parts of that tech are already paid for to some degree. So with the right people in place and some better decisions made, I think they can build a CPU that competes much better than what they have now, even with the R&D deficit compared to Intel.
 
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mrmt

Diamond Member
Aug 18, 2012
3,974
0
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I don't think they would have to go bankrupt producing it. They have many good 'off the shelf' technologies that they can use and/or improve on. I think their focus should be on mobile, maybe a beefier cat core as you say, and then scale up from there for the desktop parts. But that's just me playing armchair CEO.

Taking the cat core route is not just going for a smaller core, but going for a simpler design, with heavy use of synthesis tools and focus on low cost and TTM, not on extreme raw performance. So if they take that route, they are automatically out of the performance race.
 

SlowSpyder

Lifer
Jan 12, 2005
17,305
1,001
126
Taking the cat core route is not just going for a smaller core, but going for a simpler design, with heavy use of synthesis tools and focus on low cost and TTM, not on extreme raw performance. So if they take that route, they are automatically out of the performance race.


I didn't say as they are today, but build on them. Then again, maybe that's a terrible idea, but I'm not a decision maker at AMD... it doesn't matter what idea some random poster on a forum thinks. The point is they have some good technology available to work with.

I remember when Dothan was pretty competitive to AMD's mobile. Intel built on that using some of the good parts of the P4 as well as some new engineering altogether. I don't know that AMD could do that with the cat cores as they are far behind something like an i7. But, I could see them using lessons learned from both as well as some of the existing 'good' tech from both, and some fresh engineering to make a more competitive desktop level part.
 

ikachu

Senior member
Jan 19, 2011
274
2
81
The first time Jim Keller spoke at one of the AMD all-hands when I was there, he said something like "they said a few years ago that CPUs have pretty much hit their performance limit, but apparently no one told Intel that." It was pretty much the first time I'd ever heard anyone at AMD admit that the CPU cores performance was lacking, at least at that level.

I think people on enthusiast forums assume that everyone working at a CPU company follow benchmarks and know what the competition is doing, but in reality people are just usually focused on their particular job and don't care too much about the big picture besides whether the bonus pool got funded or not.

So, to have someone high up in leadership come out and say "here's where our competition's performance is, here is where we are aiming to be, this is what we are doing to get there" was pretty huge to me, and was almost enough to convince me to stay. In the end, I got a really nice offer elsewhere and moved on, but I do think that Jim Keller has the CPU cores team pointed in the right direction. Whether they still have the resources needed to execute is another question though (that I don't know the answer to).
 

Fjodor2001

Diamond Member
Feb 6, 2010
3,938
407
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The major question is, what are they targeting for with the new mArch.

The observations so far:

* AMD is developing a new non-Bulldozer based x86 uArch.
* AMD says FX line CPUs based on the new uArch will be released within 2 years.
* The FX line has traditionally been used for high end desktop CPUs.
* AMD already covers the tablet and low end / low power notebook market with existing cat cores.
* After Excavator, AMD will have a "market segment hole" in the desktop and server CPU market unless it is filled with a new core.

Conclusion based on these observations:

=> It's likely AMD will target the high end desktop and server CPU market segment with the new x86 CPU architecture.

But that's of course just a guess based on what info is known so far. It would be nice if AMD could be more precise in communicating their intentions with the new x86 uArch going forward. So I wonder when they are likely to publish more detailed info? 2014/2015/2016?
 

mrmt

Diamond Member
Aug 18, 2012
3,974
0
76
I remember when Dothan was pretty competitive to AMD's mobile. Intel built on that using some of the good parts of the P4 as well as some new engineering altogether. I don't know that AMD could do that with the cat cores as they are far behind something like an i7. But, I could see them using lessons learned from both as well as some of the existing 'good' tech from both, and some fresh engineering to make a more competitive desktop level part.

Dothan is a direct descendant of Coppermine, which was a big core architecture, pretty much comparable to K7 and K8. That Intel decided to use it only in mobile was more about a business decision the company made than a limitation of the architecture itself. Proof of that is that Dothan was also competitive against P4, if Intel did not cripple it with the ancient memory interface and low clock FSB.

It's not the same case with the cat core. The cat cores have fundamentally different design procedures and design targets than their big core line. If AMD plans to leverage on the cat core, they won't aim for the same parameters Intel will aim with Core.
 

pTmdfx

Member
Feb 23, 2014
85
0
0
Taking the cat core route is not just going for a smaller core, but going for a simpler design, with heavy use of synthesis tools and focus on low cost and TTM, not on extreme raw performance. So if they take that route, they are automatically out of the performance race.
As a note, Steamroller has a higher degree of design automation (less custom macros) as compared to Bulldozer IIRC, while Excavator was said to push it further by adopting high density cell library used in Cat cores and GPUs. Perhaps the new core following this path would be out of the race in the gimme-the-crown-with-highest-clock segments, but it might still be able to compete better in those they didn't do well since Bulldozer was out - IF they still intend to compete in those with the new core.
 
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Homeles

Platinum Member
Dec 9, 2011
2,580
0
0
You do understand you are quoting from a guide on how to avoid plagiarism, don't you?

Keep in mind the second meaning of the word "documentation": the process of classifying and annotating texts, photographs.
It was mostly a joke. However the point that I was making is that you don't have to provide sources for common sense.
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
But that's of course just a guess based on what info is known so far. It would be nice if AMD could be more precise in communicating their intentions with the new x86 uArch going forward. So I wonder when they are likely to publish more detailed info? 2014/2015/2016?

The article in the OP did say that AMD would release more info in 2015. It didn't say when in 2015. Assuming this is true, it's a long time for us CPU geeks to wait.
 

Fjodor2001

Diamond Member
Feb 6, 2010
3,938
407
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Well both AMD and Intel have been a lot more secretive lately, and don't give out much details far in advance. I wonder if that's because they don't want to make any plans public too early, so that the competitors can make use of that and adjust their strategy accordingly?
 

TuxDave

Lifer
Oct 8, 2002
10,572
3
71
Well both AMD and Intel have been a lot more secretive lately, and don't give out much details far in advance. I wonder if that's because they don't want to make any plans public too early, so that the competitors can make use of that and adjust their strategy accordingly?

That's a generally preferred approach for non-NDA customers. Project timelines, expected cost, performance, etc... You have to balance performance with cost/schedule. If you know competition is going to blow you out of the water, I'm sure some costlier ideas will get taken off the back burner.
 

Fjodor2001

Diamond Member
Feb 6, 2010
3,938
407
126
That's a generally preferred approach for non-NDA customers. Project timelines, expected cost, performance, etc... You have to balance performance with cost/schedule. If you know competition is going to blow you out of the water, I'm sure some costlier ideas will get taken off the back burner.

I agree. But that was also true ~5+ years ago, but back then both AMD and Intel were more open with their plans. So what has changed since then?
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
https://owl.english.purdue.edu/owl/resource/589/2/

You don't need to question things that you know are true, just because you don't like the guy and want to crap on his argument.

I dont have the data, thats why i made a question. Does he have data to show us or is he speculating ??

Seriously now, what is making more money for AMD? What has been a greater success? Their big cores, or their little cores?


I dont know, do you have data to show the rest of us ??

I will estimate the big cores makes more money than the small cores. If you have data to show otherwise by all means feel free to link them.
 
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ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
Well both AMD and Intel have been a lot more secretive lately, and don't give out much details far in advance. I wonder if that's because they don't want to make any plans public too early, so that the competitors can make use of that and adjust their strategy accordingly?

The DIY segment became irrelevant. Thats why.

All OEMs get the same info as always.
 

Idontcare

Elite Member
Oct 10, 1999
21,118
59
91
I agree. But that was also true ~5+ years ago, but back then both AMD and Intel were more open with their plans. So what has changed since then?

Experience.

People have become older and wiser, and carry forward with them the lessons learned of the past.

Who wants to keep getting scooped?
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
Experience.

People have become older and wiser, and carry forward with them the lessons learned of the past.

Who wants to keep getting scooped?

Good point. I think Intel may have learned, in part, from Apple. Having as much control as possible over your future product's specifications, introduction timing, messaging, etc. can be a competitive advantage.

We've been spoiled by such and abundance of information prior to product introduction over the past 20+ years that we now feel that we are in the dark. I think that's why we are getting so worked up over rumors - and degenerating into a bit of a pseudo P&N forum mentality.
 

Enigmoid

Platinum Member
Sep 27, 2012
2,907
31
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FX8350 vs Core i7 3820 have almost the same die size, almost same MT performance and close the same power consumption, both at 32nm.

The only problem of bulldozer is they used the same die for Server and Desktop. Intel is using a different die for Desktop (Core i7 2600) and different die for Server (Core i7 3820). Intel can do that because they sell higher volume and they can spend more for different masks. AMD only use one mask because of the smaller volume. That affects performance, power usage and economics.

Die size alone means nothing, a 300mm2 die on 32nm is cheaper than 200mm2 or smaller size on 14nm today.

I'm not sure why you are comparing a fully enabled chip to one where fully half the cores are disabled and a good amount of cache. You are also looking at a quad channel memory controller. If you are going to go by technical requirements you must look at the same die.

I agree that AMD messed up with bulldozer. When you actually look at the chip its pretty much all cache.



The problem is that that cache performs poorly and the L2 is not shared: L3 is required which increases the die size farther.

I agree that economies of scale are against AMD. That said with FX they don't have a terrible amount of room to play around with.
 

Lepton87

Platinum Member
Jul 28, 2009
2,544
9
81
I'm not sure why you are comparing a fully enabled chip to one where fully half the cores are disabled and a good amount of cache. You are also looking at a quad channel memory controller. If you are going to go by technical requirements you must look at the same die.
(blah).

3820 has a separate die. Transistor count is 1.27B and die area is 294mm2 as opposed to 2.27B/435mm2 for sandy 6c which is really an 8 core Xeon . It's still bigger then a regular sandy 4C that is 995M/ 216mm2
 
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Enigmoid

Platinum Member
Sep 27, 2012
2,907
31
91
3820 has a separate die. Transistor count is 1.27B and die area is 294mm2 as opposed to 2.27B/435mm2 for sandy 6c which is really an 8 core Xeon . It's still bigger then a regular sandy 4C that is 995M/ 216mm2

Thanks, you are right. I never realized intel released a separate die for 4C SB-E.

My point still stands that this is not the CPU to compare to the 8350 due to the massive cache and quad channel memory support. Not when identically performing and cheaper 4 core alternatives are available.
 

Maxima1

Diamond Member
Jan 15, 2013
3,522
759
146
^^ This.

And both AMD and Intel agree that 4 cores are plenty for non server/workstation workloads.

How did AMD agree? They just can't do it. We've already seen cheap cores introduced years ago. Now their offerings are APUs which are anemic with system RAM. When there's little competition, they can easily cut features, etc. to segment the market. What do you think of the internet providers? There are people receiving packages as low as or lower than 1 megabit. We're falling behind on that to the rest of the world.

Just to preempt, it's not because the software isn't there. Who is going to develop for more than two cores if many people have bought Intel's two core offerings?
 
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