M4A79 Deluxe & DDR2 Corsair Dominator problems

[Kurik]

Hello everyone,

In march 09 i bought a new AMD system consisting of the following parts that are of interest for us.

Motherboard: Asus M4A79 Deluxe
CPU: AMD Phenom II x3 720 BE
Memory: DDR2 Corsair Dominator 2x2gb kit, TWIN2X4096-8500C5D.

Problem:

My memory is obviously rated at DDR1066 5-5-5-15 2T at 2.1 volt.

1) It doesn't matter what slots I use, the memory is unstable and errors in memtest.
2) It doesn't matter that I run DDR800 with the latencies stated above at 2.1 volt (which isn't needed at those speeds), the memory is unstable and errors in memtest.
3) The memory is fine for the first few weeks, then starts to error and BSOD my computer.
4) At first I thought it was just faulty memory so I RMAd the memory and got a new batch which then repeated points 1 - 3.

So this week I RMAd my 2nd batch of ram kit (vendor confirmed that memory was not functioning) and I'm starting to wonder if my motherboard is the real problem.

Can it be that the MB is overvolting the RAM which in turn degrades ram rapidly? All my monitoring programs are reporting 2.1volts without any fluctuations (yeah right), and right now im just fishing for any kind of possible solutions.

Has anyone had similar with this MB/ram combo or can give me any hints on what im doing wrong?

Best regards,

Kurik

[izallica]

Sell corsair then buy gskill 4gbpi pc8800. Well i think it more cheap than corsair

[Kurik]

hey, thanks for that useful post

Gskill is unfortunately not a brand that is common in sweden im afraid. Any new ideas someone about this issue?

[izallica]

Try to update bios, now im use newest bios (2206) & it run without any problem

[Kurik]

Yes, thats something that i should have written in my initial post. Im currently using 2206 bios and pretty much tested every bios since board release. I've been having same problems with all of these bios versions.

And with earlier bios versions I also had some crashes followed by a post msg in the lines with "Hypertransport sync flood error". This msg seems to have dissapeared with later bios versions but perhaps thats the problem im still stuck with?

Question is why my ram sticks work at the beginning and then just start to dish out errors after a month or two of usage.

[xman01]

try tRFC0/tRFC1 to 195 ns

[Kurik]

Hey again,

I tried setting trfc0/1 to 195ns, still no luck =/

[Kurik]

Hello again,

I have now inserted my new memory modules (3rd pair) in my system. Currently running the following settings.

5-5-5-15-2T @ 2.1V, rest is set to auto.

I started off by running memtest 4.0 for 2hours without any errors. I then booted up windows and ran Prime95 blend test with 3 threads (720be) and got one of the cores to fail after 5hrs and 45minutes.

This was all on stock settings and volts except ram voltage. Not sure if this is of any useful information for you?

I also found this thread on corsair forums, and it seems there are more ppl out there with similar problems to mine.

http://forum.corsair.com/forums/showthread.php?t=79277

//Kurik