My Opty 165 cannot OC past 2.0
I have an Asus A8N5X Mobo and was able to get my old amd 64 3200+ to 2.5. Now i get blue screen after 2.0..What can I do?
AMD Opteron 165 | Asus A8N5X mobo | 5.1 surround soundcard | 2 GB Corsair PC3200 Ram| 250gig Hitachi Hdd/60 GB WD HDD | 420w PS | EVGA Geforce 7800GT | Logitec 5.1 surrond sound speakers w/subwoofer z-560
*One stick of RAM being RMA'd At the moment*
+3.3 @ 3.26v
+5.0 @ 4.92v
+12 @ 11.75
cpu temp @ 41c
MB temp @ 30c
cpu fan @ 3013
Have you set your memory to 166mhz instead of 200 ? else they'll be oc'ed as well.
My opty 170 runs at 2.65 with memory at 166 (220 effective) - higher fsb means memory needs to go down to 133 to not turn unstable. Perhaps you've forgotten the memory setting? You could also try changing to cl3 in the bios?
What's the fsb running at? and did you try lowering the HT link to 600 (mine runs 1050mhz flawless, but who knows)
What does cpu-z tell you the memory runs at ? (www.cpuid.com)
and how do you test it's stable? do you just OC it and start playing games etc? (if it ain't stable, it can fuck up your filesystem and other stuff before it fucks up enough to get a debugcheck (the blue screen).
if your cpu and/or memory is making errors, it can invalidate memory, and therefore write wrong data to disk or programs, and/or cause unexpected crashes. For instance it can set invalid return addresses at the end of a program sequence, causing it to jump to invalid code (similar to bufferoverflows).
In any event, make sure you stress the system when you think it's stable.
Perhaps check the other thread I posted in earlier for some tips.
Edit: Appearently there's some auto censoring in here .... in case it disrupts the meaning - the stars mean the F word .... second time with an s at the end.
Have have you turned down the the hyper transport bus? Probably not a power problem, unless you psu is having it's issues. It should have enough power, as my system, similar to your with sli 7800gtx's oced, and the 165 @ 3ghz would draw 330w from the wall under load.
I think you are missing a setting or two. Loosen up the ram timing, turn the ram down, lower the HTT bus.... etc.
Have you checked to make sure you have the right BIOS version?
From ASUS website:
Does ASUS A8N5X & A8N-E motherboard support socket 939 E4 & E6 stepping AMD Opteron CPU?
Yes, please update A8N5X BIOS to v0401 as well as A8N-E BIOS to 1010.003 or later to support socket 939 E4 & E6 stepping AMD Opteron CPU.
Good advice to slow down memory and HT.