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Low voltages on Phenom II, prime95 stable but games crashing?

post #1 of 15
Thread Starter 
I've been messing with my Phenom II (Deneb) lately and got it running at these settings:

CPU: 3.7 GHz, voltage on Auto, CPUID shows 1.32v but drops to 1.284 on load (vdroop I guess).
CPU/NB: 2.6 GHz, 1.2v voltage

I thought the voltages might be a bit too low, but it passed 10+ hours of each prime95 test, 2 full Memtest runs, and 20 IntelBurnTest runs on Maximum. Diablo 3 crashed once during gameplay though, and this never happened before. Is it even possible to pass all these stress tests and still not have stability in games? If yes, do you think I need more CPU or CPU/NB voltage?

Sadly I wasn't able to get Diablo 3 to crash again, and I don't have any more demanding games installed at the moment.
post #2 of 15
Stability is a question of does the CPU perform all of your tasks with out hiccups or crashing, in this case no it's not stable. You can try upping the Vcore a bit see if it helps.
Edit: I see that you are running an unlocked CPU, it's pretty sweet that you got a somewhat stable quad that can almost run at stock volts so I'd be pretty happy with that. You can still try upping the Vcore though for more stability.
Edited by Kratthew D. Kraids - 8/14/12 at 4:28pm
    
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post #3 of 15
Quote:
Originally Posted by Kratthew D. Kraids View Post

Stability is a question of does the CPU perform all of your tasks with out hiccups or crashing, in this case no it's not stable. You can try upping the Vcore a bit see if it helps.

This. Stability tests are not the end all for stability.
post #4 of 15
eh..I'd add some LLC ..looks like you have some serious vdroop.
..or more voltage
 
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post

eh..I'd add some LLC ..looks like you have some serious vdroop.
..or more voltage
LLC isn't very good on my MB, it's either Enabled or Disabled (no fine-tuning) and it significantly increases voltage on load, which I don't like. Guess I'll just up the voltage, but do you think CPU or CPU/NB is the problem here?

In regards to the unlock, I'm 99% percent sure that the cores aren't faulty as I was running it with a bit higher voltage at 3.6 GHz without any problems for over a year. But I didn't have any CPU/NB overclock. I just learned recently that it's supposed to be pretty effective smile.gif
post #6 of 15
I'd set cpu/nb voltage @ 1.3-ish and enable LLC before raising voltage,tbh..
oh yeah..I was dialing in my 24/7 Oc..back in a bit.
Err..I game-crashed..and raising the vcore 3 ticks fixed it biggrin.gif
Edited by Schmuckley - 8/14/12 at 9:05pm
 
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post #7 of 15
Those voltages seem low to me. On my old board I ran 1.3v for 2.6ghz NB and 1.35v or 1.375v (don't remember which one) for 3.689ghz CPU. If my voltages were at your settings though it would of failed any stability test very quickly.
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post #8 of 15
For a Cpu Nb frequency of 2600mhz you need 1.24v at the minimum. What Bsod are you getting? I'm talking about the error code.
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post #9 of 15

You need VRM cooling.

post #10 of 15
Thread Starter 
Quote:
Originally Posted by jason387 View Post

For a Cpu Nb frequency of 2600mhz you need 1.24v at the minimum. What Bsod are you getting? I'm talking about the error code.

No BSOD, it was just some Blizzard error report thingy, and it only happened once.
Quote:
Originally Posted by xd_1771 View Post

You need VRM cooling.

I have these things on the MOSFETs hopefully that's enough.
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