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Opteron 165 Help with overclocking please. - Page 2

post #11 of 17
Thread Starter 
=( Bah, it crashed during the night. However I found that it failed memtest, and also Prime95 at 8 minutes.

Currently have it at 2.48Ghz
DDR 133... I had to bump this down in order to get the ram to boot at closer to correct timings. Ram is currently 2 3 3 5, and it rated at 2 3 2 5... I figured the ram was the problem again.

DDR Frequency 176.8

I upped core voltage .05+, CPU-Z reads the VCore as 1.49.

Going to run and try and get her stable, any suggestions?
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post #12 of 17
Well it shouldn't be your ram after you put it on the 133 divider. Your mem is actually running at about 353 Mhz. If it's rated at 2-3-2-5 at 400Mhz. you shoukd have some breathing room now. If you still are having problems you might need to up the Vcore a touch more. Also did you drop the HTT to 3? And do you have an option in bios to increase the voltage to your chipset (Northbridge)? Are you running at 9 x 275?
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post #13 of 17
Thread Starter 
Yeah, HT is at x3

Currently, i'm at HTT 275, and it is stable. Didn't too tests too long, but 2x memtest and prime95 ran fine for over an hour which generally indicates that it will continue to be stable. I will bench further tonight. I'm going to slowly bump up the HTT see if I can get it back to 2.5ghz.

Current voltage is 1.432 from CPU-Z.

I increased it through bios .025+.

Also there is an option to increase chipset voltage, which is currently set at a default of 1.52, should I push that up to 1.6 if I can't get back to 2.5ghz?


-Greg
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post #14 of 17
At 275 Mhz. your nForce4 chipset is probably reaching a point where it needs more voltage. Increase to 1.6v and watch temps. The same rules apply to the chipset temp as the cpu. Keep it uder 55C while under a load. Also at 1.432v you are probably getting close to what that Opty can do speed wise. You might try bumping it up a bit as long as your temps are ok.

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post #15 of 17
Thread Starter 
I had Prime95 running for about 3 hours, temps were at 51*C. Video card got up to 55*C.

One thing that concerns me, is that now that prime 95 is off... it CPU-Z reads 1.466 - 1.485, where as under load it was like 1.44.

A .02 difference.... but should I be considered witch such a fluxuation?

Temps are Idling now at 39*C Idle, I think I may turn all my fans on high though.

-Greg
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post #16 of 17
If you have Speedfan installed, run OCCT. OCCT is a cpu stressing test that is only 30 minutes. Many consider it comparable to running Prime95 for several hours. What is nice about it is if you configure Speedfan correctly with it, it will generate graphs with your temps and voltages with a successful test. Pay close attention to your Vcore and make sure the voltage does not fluctuate more than 5%. I think it tracks your +12v rail too, do the same analysis of it.
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post #17 of 17
Thread Starter 
The room heating up last night pretty well, so I turned on a house and and opened the windows and that brought the cpu to 28*C Idle. I should mount that baby in my computer.

Currently it's running stable at 2.46Ghz, I will tweak with it more tonight.

Thanks for everyone's help, and I will post updates when I have them.

-Greg
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