2500k Voltages and Temperatures

kidersxbulwark

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I just got an i5 2500k. I've also installed a CM 212 Evo. I'm using a Gigabyte GA-Z77X-UD3H motherboard.

CPU-Z was reporting a VCore of around 1.28v at stock clocks with the auto setting. I just lowered it to a manual 1.150 in the BIOS because that seemed way too high based on what I was reading online.

Running Prime95, CPU-Z reports a VCore of 1.104v (also a 3.3Ghz clock -- I've disabled TurboBoost if that matters) under load. My core temperatures are 41C to 45C in HWMonitor. They were around 50C to 53C with the old VCore setting, though I read those temperatures in SpeedFan (they seem slightly higher than HWMonitor)

It should also be noted that I haven't done any long-term stability testing. I've passed a single Prime95 test under these conditions.

Was the auto setting just high or am I missing something? Also, are those good/reasonable temperatures?

Also, CPU-Z is showing an idle voltage of 1.140v. Huh???
 
Solution
A lot of things going on here, but first off, the temps are perfectly fine (even before you lowered the Vcore). But yes, the Auto voltage was overshooting a bit for stock.

Second, when you set a manual Vcore, it will stay at that voltage (or close to it, hence 1.140V) even at idle. I have to use offsets with my board anyway because I don't have the option of using a manual Vcore, but using offsets allows the Vcore to drop at idle.

Just to show you what temps you should be shooting for with the Evo, my temps @ 4.5 and 1.277V load voltage with Prime 95 are in the low 60's. I have my Evo set up in push/pull, but it's only a few degrees warmer without the extra fan.

And stick with HWMonitor. SpeedFan is hit or miss these days with newer...
A lot of things going on here, but first off, the temps are perfectly fine (even before you lowered the Vcore). But yes, the Auto voltage was overshooting a bit for stock.

Second, when you set a manual Vcore, it will stay at that voltage (or close to it, hence 1.140V) even at idle. I have to use offsets with my board anyway because I don't have the option of using a manual Vcore, but using offsets allows the Vcore to drop at idle.

Just to show you what temps you should be shooting for with the Evo, my temps @ 4.5 and 1.277V load voltage with Prime 95 are in the low 60's. I have my Evo set up in push/pull, but it's only a few degrees warmer without the extra fan.

And stick with HWMonitor. SpeedFan is hit or miss these days with newer Intel hardware.
 
Solution

kidersxbulwark

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May 3, 2011
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Thank you. I'll look into offset.