BH5 memory causing artifacts!?

[Salkcin]

Hi,

A friend of mine recently bought a used pair of 2x512MB Mushkin PC3500 LVL2 (BH5). He ran them in Abit AS8 (S775/865PE), but found out that his computer would render artifacts when running the memory at 240MHz CAS2-2-2-5 (3,2v). After some testing he isolated the problem to be the memory - now I'm testing them and I've just done the 3,3v rail mod for the memory on my Asus P5P800 (S775/865PE) and same things occuring and suprisingly enough the memory are able to run memtest without an error at 250MHz CAS2-2-2-5 (3,3v). They're just causing artifacts to apear when playing games...

Just wanted to know if this is a "known" bug, anyone experienced the same and if it can be solved? The memory runs fine at their rated speed so it's hard to complain to Mushkin about the memory won't run 20% above specification :-P.

Posted this problem on "Xtreme bandwidth" since it seems this is the part of the forum where the memoryfreaks are :cool:

[v_p]

Hi Salkcin,

I've been the same problem with a I865 chipset on Asus P4P800 Deluxe.
Download the I865 Tweaker and change the Dram Latency parameter to 01 will probably solve this problem....
http://www.cpuid.org/download/Tw865.zip

[Salkcin]

Thank you!

It actually solved it. Now running 250MHz CAS2-2-2-5 at 3,3v with 1GB of BH5... now I just have to find a way to make the "01" setting permanent. I currently have to set it each time I have booted.

[SIOUX]

I had the same problem with the exact same Mushkin RAM. But the artifact started when my CPU went over 2900 mhz. it would artifact like hell at 2905 mhz, but at 2895 it was perfect. that was on a ABIT AV8 board. i put in some other ram, and it was gone:) i never got to try the dram thing, but maybe it would have worked:)

[v_p]

If you want to make the 01 setting permanent you can flash your bios of motherboard with a dram latency set at 01 on a modded bios...
Personnaly i never find a bios modded for my P4P800 deluxe :(

[godsa]

but found out that his computer would render artifacts when running the memory at 240MHz CAS2-2-2-5 (3,2v).

Isn't it tru that certain video cards aren't able to keep up with the timing/fsb that the memory is throwing at it..since there aren't seperate timing for the video card memory?

and forcing the card to do somthing it can't can cause video memory to error?
Thought I read that here at xtreme.

And One way around it is by increasing your agp # from like 66 to 70 75 etc?

Im not xtremely positive on this..maybe another long term member can chime in and correct me or elaborate.

[Salkcin]

Increasing the vAGP or AGP frequencys does not solve the problem, but the dram latency parametre = "01" solved it and no problems have appeared yet... have been stressing the system ever since it was solved...