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i5 2500k is it really much hotter than Thubans?

post #1 of 27
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So after being disappointed that my open box (Asus P8P67 Pro) motherboard didn't work and submitting a RMA, I just grapped my bro's other open box motherboard to test it and maybe use it while I solve the issue with my other motherboard. It worked great so far... but I'm kind of disoppointed that the cpu temperature shows to be 50C at BIOs with a H50 push/pull.

With same cooler my AMD 1055T would run at 30-33C idle at windows. I've seen quite a few threads about the i5 2500k running run hot like around 60C with stock cooler. What have you guys done to bring temps down? I made sure it was seated correctly and I applied a pea size of thermal paste (artic silver 5) that's all i had.

well I'll install windows and see how it runs at load.
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post #2 of 27
idle as in running at 1.6ghz doing nothing idle ? it should be in the 20s, i wouldn't use the bios to check it though.
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post #3 of 27
Quote:
Originally Posted by Sodalink View Post
So after being disappointed that my open box (Asus P8P67 Pro) motherboard didn't work and submitting a RMA, I just grapped my bro's other open box motherboard to test it and maybe use it while I solve the issue with my other motherboard. It worked great so far... but I'm kind of disoppointed that the cpu temperature shows to be 50C at BIOs with a H50 push/pull.

With same cooler my AMD 1055T would run at 30-33C idle at windows. I've seen quite a few threads about the i5 2500k running run hot like around 60C with stock cooler. What have you guys done to bring temps down? I made sure it was seated correctly and I applied a pea size of thermal paste (artic silver 5) that's all i had.

well I'll install windows and see how it runs at load.
Uhhh, BIOS is not idle. It's running full speed (no SpeedStep) and high voltage while your Thuban probably used C'n'Q to clock down in Windows. I am idling at 31 C with my i5 and that's with a 1.352 V idle voltage (significantly higher than stock).
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post #4 of 27
Quote:
Originally Posted by Sodalink View Post
... but I'm kind of disoppointed that the cpu temperature shows to be 50C at BIOs with a H50 push/pull.
I would guess that's the issue there. The BIOS is actually putting some load on the CPU so you can't really tell much from BIOS temps, they are often a lot more than the idle temps you will see in Windows. Go ahead and install and I would expect it to come down.
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post #5 of 27
Like others have said, the BIOS temperature readings is not idle. It's at full speed.

Install Windows, make sure speedstep is on, and then check your idle temps.
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post #6 of 27
Thread Starter 
Quote:
Originally Posted by duox View Post
idle as in running at 1.6ghz doing nothing idle ? it should be in the 20s, i wouldn't use the bios to check it though.
Actually I forgot about that... it is really running at 3.3~ghz

Quote:
Originally Posted by B!0HaZard View Post
Uhhh, BIOS is not idle. It's running full speed (no SpeedStep) and high voltage while your Thuban probably used C'n'Q to clock down in Windows. I am idling at 31 C with my i5 and that's with a 1.352 V idle voltage (significantly higher than stock).
You are correct ^

Voltage is at 1.16-1.17~, I'll wait Windows finish installing and then I'll check temps. I was starting to regret getting i5 2500k.


You learn something new everyday
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post #7 of 27
Thread Starter 
Quote:
Originally Posted by bennoculus View Post
Like others have said, the BIOS temperature readings is not idle. It's at full speed.

Install Windows, make sure speedstep is on, and then check your idle temps.
sorry for double post and my noobiness... but speedstep should be a setting in the bios right?
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post #8 of 27
Quote:
Originally Posted by Sodalink View Post
You are correct ^

Voltage is at 1.16-1.17~, I'll wait Windows finish installing and then I'll check temps. I was starting to regret getting i5 2500k.


You learn something new everyday
Regretting the purchase of a 2500K is stupid unless you owe money to the mob or you needed a 2600K for graphics rendering.

EDIT: SpeedStep is probably called EIST or SpeedStep in the BIOS.
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post #9 of 27
Quote:
Originally Posted by B!0HaZard View Post
Uhhh, BIOS is not idle. It's running full speed (no SpeedStep) and high voltage while your Thuban probably used C'n'Q to clock down in Windows. I am idling at 31 C with my i5 and that's with a 1.352 V idle voltage (significantly higher than stock).

Yap !!!!!!!!!!!!!!!!!!!!!!!
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post #10 of 27
You cannot compare AMD vs. Intel temps in windows either.

AMD platforms report approximate TCASE.

Intel's DTS reports distance to TJmax, from which an absolute temp is usually calculated by software.

TJ is vastly hotter than TCASE (usually by 10-30C). There is no way to get an accurate TCASE reading on an Intel chip without milling a trench in the CPU's IHS and installing your own thermocouple.

A 2500k almost certainly runs cooler than a Thuban, except at very high OCs, even if the temps you are seeing in software report the exact opposite.
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