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Corsair DDR2 XMS2 5400UL Memory Issue

post #1 of 8
Thread Starter 
I have had enough of this memory issue that I have experienced since I purchased my ASUS P5WDH Deluxe motherboard.

I own a pair of Corsair XMS DDR2 5400UL modules, both operating in dual channel.
These modules are rated to operate at 675MHz at 3-2-2-8 timings at 2.1v (earliest version).
However, I can only get these modules stable at 5-4-4-13 (2.2v) at 712MHz (1:1).

Settings Related to Memory:

DRAM ECC Mode: Disabled
Hyper Path 3: Disabled
DRAM Throttling Threshold: Auto - This is the one I'm wondering about.

Performance Mode is set to Auto.
MCH/ICH Voltage are set to Auto.
FSB Termination Voltage is set to Auto.

Does anyone have any suggestions to allow these modules to operate at their rated speeds?

The reason I am asking is when I receive my water cooling upgrade at Christmas I intend to force these modules to operate at 800MHz 4-4-4-12, if possible, and currently this is not going to happen.
post #2 of 8
Sorry i found the following for that RAM but may not help you :

http://www.extremeoverclocking.com/r..._5400UL_4.html

http://www.madshrimps.be/?action=getarticle&articID=371
post #3 of 8
I had the 8000UL and I was able to hit 1000mhz on CAS4 with 2.30v on my P5WD2-Premium.

I heard the 5400 and 8000 UL were basically the same (from FUGGER).

Now, I'd say use a 4-4-4-8 or 4-4-4-12 with a 2.30V, 1:1 or 3:5 ratio and disble the Performance Mode.

I believe the DRAM Threshold is for stability when enabled but.....I'm starting to Wonder if that's the same feature in my P5B but instead of being called that is called: Static Read Control which is also in the memory section in the BIOS. Which has to be disabled for high fsb.

I'm pretty sure I've seen the 5400UL do 1000mhz, and here's a fella getting close to 500mhz with his 5400UL with tight timings: XMS2 5400UL 479MHz 4-2-2-1.
post #4 of 8
Thread Starter 
I do not believe Performance Mode can be disabled on my board unless "Auto" defines the disable action. Turbo, Auto and Standard can be assigned.

I know the memory can operate at 1GHz, however there seems to be an issue with my board which is causing these poor timings.
post #5 of 8
Yeah, I almost forgot, there's no disable but AUTO-Standar-Turbo mode. I meant to say "standard".

If they're capable of 1000mhz, try a 2:3 ratio right now. Set the CPU's freq. to 334MHZ and RAM at 1000mhz with a 2.30v and 4-4-4-8 timings that is the quickest way to find out right now.

Set Performance Mode to Standard.
post #6 of 8
Thread Starter 
These modules are not within a "cool" environment.

When I purchased these modules I did not find out which modular chip design they used, therefore I do not know the thermal capabilities of these modules.

I am not sure if 2.3v will be a "good" option due to the thermal environment.
post #7 of 8
They have fat body D9s, they can handle the 2.30v perfectly fine, I even use 2.40v in my 8000UL.

And I never use active cooling. But you could strap an 80mm fan on top of the modules using rubber bands or cut out a 120mm whole on the side panel and point it directly to where the RAM is.

This is what my 8000ULs could do with 2.30v:
1-http://valid.x86-secret.com/show_oc?id=57903

2-http://valid.x86-secret.com/show_oc.php?id=85130

3-http://valid.x86-secret.com/show_oc?id=105935

5400 and 8000 were the same.
post #8 of 8
Quote:
Originally Posted by Nasgul View Post
They have fat body D9s, they can handle the 2.30v perfectly fine, I even use 2.40v in my 8000UL.

And I never use active cooling. But you could strap an 80mm fan on top of the modules using rubber bands or cut out a 120mm whole on the side panel and point it directly to where the RAM is.

This is what my 8000ULs could do with 2.30v:
1-http://valid.x86-secret.com/show_oc?id=57903

2-http://valid.x86-secret.com/show_oc.php?id=85130

3-http://valid.x86-secret.com/show_oc?id=105935

5400 and 8000 were the same.
2x 512 Corsair 5400UL 1.2v FATBODY D9DQW

405 (810DDR) 4-2-2-1 2.1v


416 (832DDR) 4-2-2-1 2.3v


402 (804DDR) 3-2-2-1 2.3v


Fatbody 530 4-3-2-4 2.4v

Bye
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