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What voltage are you running your CPU at?

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What is your CPU's core voltage?

  • <1.1V

  • 1.1V - 1.15V

  • 1.15V - 1.2V

  • 1.2V - 1.25V

  • 1.25V - 1.3V

  • 1.3V - 1.35V

  • >1.35V

Results are only viewable after voting.
X5650@4Ghz 1.3V in BIOS and 1.256V loaded.

I've also tested it at 1V. Works well at stock with the 22x multi, can't really go above that.
tolis626 said:
Ahhh... These must have been awesome times, when you wouldn't let a few volts get in the way of you and glorious performance. As glorious as 20-40MHz could be, anyway. 😛
Click to expand...

Kinda like the middle ages were awesome times. Except not really.😉
 
tolis626 said:
Am I the only one that is afraid of leaving my CPU running stress tests overnight? Not necessarily overnight, I'm just afraid of leaving it there running at 100% without my presence in case something goes wrong. I mean, during Prime95, my CPU produces enough heat to overwhelm my H110, so it will rise to over 90C (sometimes hitting 100C and throttling) after about 30 minutes of testing. OCCT/x264/AIDA64 are lighter on the thermals, but I'm still afraid to leave it.

Generally, my way of testing involves opening any monitoring software I need, starting the testing (usually OCCT because reasons), opening my music playlist and leaving it there. I don't watch it or do other things, but I know it crashed if the music stops playing. Not the best way to do it, but I am at peace knowing that if anything happens, I'll be there.

Am I too paranoid about it?
Click to expand...
Just curious ,which CPU test do you run in OCCT , the OCCT CPU one or Linpack one .
If you enable AVX option it gets pretty hot to ,very close to prime95 latest version .
 
FX2000 said:
FX6350, 4.2Ghz, 1.356v according to CPU-Z.
Click to expand...
One can say a lot of bad things about AMD CPUs, but they can handle some voltage alright! 1.35V isn't even close to too much for Piledriver overclocking.
Ed1 said:
Just curious ,which CPU test do you run in OCCT , the OCCT CPU one or Linpack one .
If you enable AVX option it gets pretty hot to ,very close to prime95 latest version .
Click to expand...

I use the OCCT test. The Linpack one, especially with AVX, kills my thermals within seconds. We're talking about hitting 100C before the fans can spin up! On Haswell CPUs I wouldn't use it without custom water cooling, to be honest.
 
tolis626 said:
One can say a lot of bad things about AMD CPUs, but they can handle some voltage alright! 1.35V isn't even close to too much for Piledriver overclocking.


I use the OCCT test. The Linpack one, especially with AVX, kills my thermals within seconds. We're talking about hitting 100C before the fans can spin up! On Haswell CPUs I wouldn't use it without custom water cooling, to be honest.
Click to expand...

Ok, The OCCT test for me is about same as prime95 (ver 27.9) I do about 63 or so after few min . The Linpack with AVX goes to about 70c for me after few min . I don't use it for testing .
I am at only 4.3@1.135v so temps not up there .
 
tolis626 said:
And how long have you been running it like that for? 1.44V is rather extreme. Too extreme to be honest. Really curious...
Click to expand...
A long Time.

P6T7's are pretty good boards to begin with for handling things I guess.

I think I even had the I-7 920 in here kicked up a lot for 5 years, but it's elsewhere now.
 
MongGrel said:
A long Time.

P6T7's are pretty good boards to begin with for handling things I guess.

I think I even had the I-7 920 in here kicked up a lot for 5 years, but it's elsewhere now.
Click to expand...
Really? I wouldn't worry about the board if it's high-quality. I'd be more worried about the chip crapping out. Still, impressive!
Ed1 said:
Ok, The OCCT test for me is about same as prime95 (ver 27.9) I do about 63 or so after few min . The Linpack with AVX goes to about 70c for me after few min . I don't use it for testing .
I am at only 4.3@1.135v so temps not up there .
Click to expand...

Yup, OCCT yields similar results to Prime95 27.9.

I've been using Prime95 28.5's large FFT test lately trying to overclock my uncore. With every setting I've tried it crashed sooner or later. Even 3.8GHz at 1.15V. Other settings crashed within 2 minutes, others took over 15 minutes to crash, but eventually everything crashed. The 4.7GHz at 1.307V core/4.4GHz uncore at 1.21V I'm using now doesn't even make it to 3 minutes in Prime95 large FFT. Strange thing though, it passed 2.5 hours straight of Aida64 stress test (CPU, FPU and cache selected). I think that's stable. I'm gonna give it a week or so of daily usage and see how it goes. If I get no instabilities, I'll try encoding a large video file with Handbrake and see if it gives any errors. If it doesn't, and it passes 2 hours of OCCT and x264, I'll call it stable and Prime95 can be written off as useless for me.
 
tolis626 said:
Really? I wouldn't worry about the board if it's high-quality. I'd be more worried about the chip crapping out. Still, impressive!


Yup, OCCT yields similar results to Prime95 27.9.

I've been using Prime95 28.5's large FFT test lately trying to overclock my uncore. With every setting I've tried it crashed sooner or later. Even 3.8GHz at 1.15V. Other settings crashed within 2 minutes, others took over 15 minutes to crash, but eventually everything crashed. The 4.7GHz at 1.307V core/4.4GHz uncore at 1.21V I'm using now doesn't even make it to 3 minutes in Prime95 large FFT. Strange thing though, it passed 2.5 hours straight of Aida64 stress test (CPU, FPU and cache selected). I think that's stable. I'm gonna give it a week or so of daily usage and see how it goes. If I get no instabilities, I'll try encoding a large video file with Handbrake and see if it gives any errors. If it doesn't, and it passes 2 hours of OCCT and x264, I'll call it stable and Prime95 can be written off as useless for me.
Click to expand...

hmm , should not crash at stock clocks with defaults in bios .
Have you tried with lower clocked/loose timing on mem (not XMP ) , might be a flaky stick .

See how Realbench works , that is a bunch of real world apps bundled up for test (gimp, handbrake , luxmark etc )
 
Ed1 said:
hmm , should not crash at stock clocks with defaults in bios .
Have you tried with lower clocked/loose timing on mem (not XMP ) , might be a flaky stick .

See how Realbench works , that is a bunch of real world apps bundled up for test (gimp, handbrake , luxmark etc )
Click to expand...

Well, memory is about the only thing I'm sure is stable. I've run long sessions of HCI memtest 3 times, one was over 8 hours long. No errors or crashes. But still, I did lower the memory clocks to stock to try Prime95. Still no joy.

I'll try RealBench and report back. Thanks!
 
My laptop has a i7-4700mq in it.
Dynamic CPU voltage offset is at -116 mV.
Processor voltage offset is also at -116 mV. (ratio slightly lowered).

So my CPU at:
idle @ 0.56v (800mhz)
load @ 0.93v (3.1ghz) (4cores stresstest in XTU)
 
Arkadrel said:
My laptop has a i7-4700mq in it.
Dynamic CPU voltage offset is at -116 mV.
Processor voltage offset is also at -116 mV. (ratio slightly lowered).

So my CPU at:
idle @ 0.56v (800mhz)
load @ 0.93v (3.1ghz) (4cores stresstest in XTU)
Click to expand...

how do those relate to end voltage , I am on IB so no dynamic cpu voltage . whats total - offset and final voltage ?
 
I can't decide if I should do 4.5 GHz at 1.21v or 4.6 GHz at 1.26v.
I feel like CPU input voltage is nearly as important as vcore. Really helps drive down core voltage requirement for stability.
 
1.368v, which is stock for my Athlon II x2 unlocked to a tri-core. Currently at 3.6 ghz. It takes something like 1.48v to get it up to 3.9 ghz.
 
1.376 at load on a 3770K@4.6. temps are low 70's, so I'm ok with it. Had it for about a year and a half.
 
Last edited:
DrMrLordX said:
1.368v, which is stock for my Athlon II x2 unlocked to a tri-core. Currently at 3.6 ghz. It takes something like 1.48v to get it up to 3.9 ghz.
Click to expand...
Yup, AMD CPUs like their volts high. My father has an Athlon similar to yours (don't remember exactly, as it's in a soon to be retired rig) that unlocked to a quad core. Voltages were so high that I thought the chip was defective. It stopped being able to have four cores enabled after a point, but it's still running in tri-core mode. Voltage is close to 1.4V for something like 3.7GHz.
hawtdawg said:
1.376 at load on a 3770K@4.6. temps are low 70's, so I'm ok with it. Had it for about a year and a half.
Click to expand...

Holy crap. That's one bad chip and a helluva lot of voltage. But if you haven't seen signs of degradation yet, no reason to step down, especially if heat isn't a concern. In fact, without it meaning that Haswell will handle high voltages as well, this makes me more comfortable in my choices. 1.315V at 4.7GHz with 1.335V spikes under 100% load suddenly doesn't sound all that terrible anymore. 😛
 
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