which DDR400 works with Gigabyte 8SG667

[phsf98]

Need advise please...........

i am thinking of buying this mobo, but which DDR400 RAM will it works with ? Do anyone test this mobo with Kingston, Apacer, kingmax DDR400 ram?

And i plan to add a gigabyte radeon 8500Pro, will this combination---( gigabyte 8SG667 + DDR400 + gigabyte radeon 8500Pro ) a stable one? Anyone face any problem with this combination?

Thanks for help ....

 

[mrbass]

I just ordered the 400Mhz cas 2 corsair 512MB from newegg 187.99. I'll let ya know when I get it if it works good with the 8sg667. Today I overclocked the fsb to 150...and after playing a bit of battlefield for like 20 mins it rebooted. I'm almost 99% sure it was the crucial ddr which was pc2100 266Mhz running at 300Mhz. screenshot

 

[First]

My tests with DDR400 and the 8SG667 showed that Corsair CAS2 DDR400 and Mushkin CAS2.5 DDR400 were the best and most reliable DDR400 to use with this board.

 

[fxsts]

Originally posted by: Evan Lieb
My tests with DDR400 and the 8SG667 showed that Corsair CAS2 DDR400 and Mushkin CAS2.5 DDR400 were the best and most reliable DDR400 to use with this board.

Evan,

If so, what are the worse and less reliable DDR according to your test? Also, do you know what memory chips those Corsair and Mushkin had?

Thanks in advance.

 

[First]

Originally posted by: fxsts

Originally posted by: Evan Lieb
My tests with DDR400 and the 8SG667 showed that Corsair CAS2 DDR400 and Mushkin CAS2.5 DDR400 were the best and most reliable DDR400 to use with this board.

Evan,

If so, what are the worse and less reliable DDR according to your test? Also, do you know what memory chips those Corsair and Mushkin had?

Thanks in advance.

The DDR400 chips were Winbond-based. I also used Twinmos DDR400 (Winbond too), and experienced no issues. The Mushkin and Corsair DDR400 modules were just a bit faster, that's all.

 

[OvErHeAtInG]

Who here has the Gigabyte 8SG667? I've been looking all over for this thing and can't find it. Gonna use the new 2.50 / 400 P4, 8500LE Retail, and the Corsair CL2 400 mentioned above.

Please please, I'm dying for this thing !!

 

[mrbass]

8sg667 directron it says "Availability: Sorry, this item is sold out. No ETA." That's where I got mine from. Anyway I wouldn't worry about it till they post a bios that shows cpu/mobo temps. Lastest is Sep 9th F3BIOS

 

[OvErHeAtInG]

Thanks mrbass. Just discovered the big thread on this mobo. Really frustrating... may try ASUS or the MSI.

 

[CaptnKirk]

There is NO JEDEC specification for PC3000 or PC3200 RAM. The highest actual RAM is PC2700 at DDR333. Almost all the PC3000 and PC3200 is made by just overclocking the PC2700 chipset and hoping it will run. It's designed to run approximately 10% above the 333 rate anyway, and Samsungs actualy has about a 20% margin.

Let's see that's 333 plus 20% is another 67 which equals 400, Wah Lah - thats what they call the PC3200 isn't it ? Mystery solved - it's overclocked PC2700 !!

But....Samsung make for themselves a chipset that runs at that level, and since most High Performance RAM memory makers buy their chipsets from Samsung.....
Why not just get real Samsung ? Hmmmm - 400 plus 20% is another 80, and since thats 480, nah, ain't no 480 is there (?) ..... yet.

This may help you to understand: PC2700

 

[fxsts]

Originally posted by: Evan Lieb

Originally posted by: fxsts

Originally posted by: Evan Lieb
My tests with DDR400 and the 8SG667 showed that Corsair CAS2 DDR400 and Mushkin CAS2.5 DDR400 were the best and most reliable DDR400 to use with this board.

Evan,

If so, what are the worse and less reliable DDR according to your test? Also, do you know what memory chips those Corsair and Mushkin had?

Thanks in advance.

The DDR400 chips were Winbond-based. I also used Twinmos DDR400 (Winbond too), and experienced no issues. The Mushkin and Corsair DDR400 modules were just a bit faster, that's all.

Evan,

Thank you for the info. I picked up a PC3200 512MB stick cheap last time when I was in Japan (about $140), and it got Winbond 5ns chips. In fact, almost all the PC3200 sticks I saw there had Winbond chips.

Unfortunately, the stick did not work on my Epox 4G4A when memory bus was set above 133Mhz. Now, I can hope that it might work on the Gigabyte board.



CaptnKirk,

There have been some TRUE PC3200 DDR started coming out, Winbond indeed is one, and I believe that Samsung goit one as well.

 

[phsf98]

thanks for advice...
But lately, i have found so many computer store here offering so called"DDR400" RAM .... as Apacer, kingston, kingmax, and also Mushkin one. Anyone have an idea how to differentiate the "overclock" one with the real DDR400?

The the Mushkin DDR400 i have seen in one shop, it is like a normal ram .. without the heatsink...... does Mushkin ever make this type of ram?

 

[phsf98]

can i mix different DDR RAM in this board? Let say one DDR266 with one DDR 333. What will happen if i really do that ?

 

[CaptnKirk]

Mixing of memory will allow you to run at the value of the lower asset.
EG: DDR266 and DDR333 you get the DDR266 perfromance.

However in an overclocking situation, you will actualy atain the highest capacity of the least capable asset.
EG: If the DDR266 can overclock to - lets say 285, and the DDR333 can overclock to 350, your limit is the 285,
which is the upper performance of the weaker of the two.

I't's like towing a trailer with a car that can go 150 MPH, but the trailer will only go 120 MPH.
When you reach the 120 MPH performance barrier, thats it - can't do no more. ( kinda simplistic )

*NOTE to fxsts: On the PC3200 I did mention that Samsung makes chipsets that run at that level, but point in case here is that
there is NO STANDARD as set by the JEDEC which controls the specification, so there is absolutely no requirement for what
that PC3200 has to perform to, all it has to do is perform as well as a PC2700 (DDR333) and they can say whatever they want to.
With no actual requirement there is a lot of 'Make up your own advertising gimmick', so let the buyer beware.

 

[fxsts]

CaptnKirk,

You are absolutely right. There have been DDR memory chips which can run at 200Mhz and faster. In fact, what speed you can run memory chips at is based on a simple calcuration of nano-second rating of the chips.

10ns chips run at 100Mhz, 7.5ns chips at 133Mhz, 6ns chips at 166Mhz, 5ns at 200Mhz and so on.

However, I believe that no standard has been set for DDR400 as to what all the memory settings DDR400 should run at as standard. And that is probably the reason why I am having a problem with my DDR400 Winbond stick. The chips on the stick are 5ns, so they should run at 200Mhz, but it doesn't.

Regarding mixing rams, according to my experience, if you mix two or more different brands of rams, you often cannot overclock them even as fast as the overclocked speed which the least capable one could achieve by itself.

For example, even if you had two PC2100 sticks (one does 160Mhz and another does 182Mhz), you might not be able to achieve 160Mhz by mixing them together.

I believe that this is due to the differences in timings and settings for each specific memory chip, but of course, I am no expert on this.

 

[CaptnKirk]

That sounds logical for the memory mix, an underachieved should really hold back the performance of the superior part.

I'm playing with a Samsung (true) and Crucial mix of PC2700 to see what depth I can function with, and will try to reach
a population of 2GB over 4 banks, providing the 4th bank wil cue without ECC. It should - but it's a Mystery to be solved.

P.S. - $ 200 sounds a bit steep for a Video card, considering all the really good stuff out for $ 80 - $130,
and the fact that the games haven't even been writen yet for the SuperCards in the $ 300+ price range.

Open the Pod Bay Door - Hal !