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CPU Running too Hot?

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November 7, 2013 11:00:10 AM

I recently completed my first PC build and I'm wondering about the operating temperature of my CPU. Processor Temperature is 64°C and that's with the PC at idle. In fact, I am in the BIOS now, so OS has not booted up and PC is not really working at anything.
System specs as follows:
MB - Intel DZ68BC LGA 1155
CPU - Intel i5-2500 Sandy Bridge
RAM - 2x4 GB Corsair Vengeance
PSU - EVGA 600B 600W Bronze
HDD - Seagate Barracuda 1TB
ODD - ASUS DVD/CD RW
Monitor - ASUS VX238h
Case - NZXT Source 210 Elite
OS - Windows 7 Home Premium 64-bit
Keyboard and mouse.
I am using the integrated graphics and sound of the MB, so no GPU or soundcard installed. So really, the CPU is not under any significant load whatsoever. Is this temperature normal?

More about : cpu running hot

a c 436 à CPUs
November 7, 2013 11:03:31 AM

64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?
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a b à CPUs
November 7, 2013 11:06:56 AM

That is even high for a stock cooler. You might want to check that it is seated properly with the right amount of downforce.
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November 7, 2013 11:16:13 AM

JOOK-D said:
64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?


I am using the standard/stock heatsink, which came with the thermal paste pre-applied.

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November 7, 2013 11:17:09 AM

skit75 said:
That is even high for a stock cooler. You might want to check that it is seated properly with the right amount of downforce.


I am pretty sure it is installed properly, but I will double check just in case. Thank you!

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a c 436 à CPUs
November 7, 2013 1:24:35 PM

Webslinger64 said:
JOOK-D said:
64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?


I am using the standard/stock heatsink, which came with the thermal paste pre-applied.



You might want to get an aftermarket one then. Try a Coolermaster Hyper 212 EVO, cheap and effective and probably the most popular budget air cooler that performs like a champ. Just make sure it will fit inside your case.
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November 7, 2013 5:15:39 PM

JOOK-D said:
Webslinger64 said:
JOOK-D said:
64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?


I am using the standard/stock heatsink, which came with the thermal paste pre-applied.



You might want to get an aftermarket one then. Try a Coolermaster Hyper 212 EVO, cheap and effective and probably the most popular budget air cooler that performs like a champ. Just make sure it will fit inside your case.


OK, so I did reseat the CPU and reinstall the hs/fan assembly. The CPU temperature is holding steady at 61°C vs. the 65°C earlier today. Sounds like that's still to hot. Is there a temperature range the CPU should fall under?
If that is the case, I will take you up on your recommendation to purchase an aftermarket cooling system. The Coolermaster sounds like it should do the trick. Thanks!

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a c 436 à CPUs
November 8, 2013 1:18:12 AM

Webslinger64 said:
JOOK-D said:
Webslinger64 said:
JOOK-D said:
64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?


I am using the standard/stock heatsink, which came with the thermal paste pre-applied.



You might want to get an aftermarket one then. Try a Coolermaster Hyper 212 EVO, cheap and effective and probably the most popular budget air cooler that performs like a champ. Just make sure it will fit inside your case.


OK, so I did reseat the CPU and reinstall the hs/fan assembly. The CPU temperature is holding steady at 61°C vs. the 65°C earlier today. Sounds like that's still to hot. Is there a temperature range the CPU should fall under?
If that is the case, I will take you up on your recommendation to purchase an aftermarket cooling system. The Coolermaster sounds like it should do the trick. Thanks!



I have one sitting next to me right now, waiting to be installed :)  It is large though, so make sure that you haven't got RAM with tall heatsinks (I think you're fine with the vengeance) and your case is wide enough to house it.
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a c 127 à CPUs
November 8, 2013 1:50:22 AM

Yeah that is still too hot at idle, it must not be making a good enough contact.

The Arctic cooling 13 is a cheap and easy to install cooler, which is way better than stock.
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November 8, 2013 2:02:27 AM

Make sure:
Thermal paste is applied properly.
The fans are working
Cooler fan is working
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November 8, 2013 6:29:09 AM

mrgchimp said:
Make sure:
Thermal paste is applied properly.
The fans are working
Cooler fan is working


All case fans are working, CPU fan is working fine, so not sure why this CPU would run so hot at idle. I would like to try reinstalling the hs/fan with a better thermal compound, i.e., Tuniq TX-4 or something of that nature to see if that might make a difference. If it doesn't than I will buy an aftermarket cooler like those mentioned above.
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November 19, 2013 12:27:40 PM

JOOK-D said:
Webslinger64 said:
JOOK-D said:
Webslinger64 said:
JOOK-D said:
64 idle is quite high.

Get something like coretemp/hwmonitor and measure it when you're actually in the OS, like when you're idel, light browsing, and gaming.

You may not have applied the thermal paste correctly; which method did you use? Are you using the standard heatsink?


I am using the standard/stock heatsink, which came with the thermal paste pre-applied.



You might want to get an aftermarket one then. Try a Coolermaster Hyper 212 EVO, cheap and effective and probably the most popular budget air cooler that performs like a champ. Just make sure it will fit inside your case.


OK, so I did reseat the CPU and reinstall the hs/fan assembly. The CPU temperature is holding steady at 61°C vs. the 65°C earlier today. Sounds like that's still to hot. Is there a temperature range the CPU should fall under?
If that is the case, I will take you up on your recommendation to purchase an aftermarket cooling system. The Coolermaster sounds like it should do the trick. Thanks!



I have one sitting next to me right now, waiting to be installed :)  It is large though, so make sure that you haven't got RAM with tall heatsinks (I think you're fine with the vengeance) and your case is wide enough to house it.


Alright, installed the Cooler Master Hyper 212 Evo today and my CPU temperature dropped from 65°C to 45-46°C at idle. That is a relief. I was expecting a better drop for some reason. Seems like some of the forums I've read this CPU - i5-2500k - should run under 40°C at idle. Thoughts?

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a c 436 à CPUs
November 19, 2013 12:37:07 PM

It is weird that it still runs that hot at idle. However you are running off an iGPU which could account for the extra heat.

If you don't mind me asking, do you live in a hot country/area? :p  Could account for the temps. It also depends where you keep your PC, if it's on carpet or in a cabinet or something.
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November 19, 2013 12:48:58 PM

JOOK-D said:
It is weird that it still runs that hot at idle. However you are running off an iGPU which could account for the extra heat.

If you don't mind me asking, do you live in a hot country/area? :p  Could account for the temps. It also depends where you keep your PC, if it's on carpet or in a cabinet or something.


I live in the Rocky Mountains at elevation, so no it's not hot here. PC is upright on a desktop; not on carpet or inside a cabinet. The room I keep it in is an open office area (high ceilings, two doorways), so it's not like ambient heat builds up in here. I have an old P4 PC running in the same room and that PC's CPU temp is 34°C.
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a b à CPUs
November 19, 2013 12:50:26 PM

New idle temperature might be a little "weird" but not out of the ordinary and definitely, under control. Congrats.
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November 19, 2013 12:53:16 PM

skit75 said:
New idle temperature might be a little "weird" but not out of the ordinary and definitely, under control. Congrats.


Thanks, I feel much better about it now, but I do wish it was more "normal".
Actually, I do have another questions as I think about this issue further. I have read somewhere that the CPU temperature readout in BIOS may actually be different than the CPU temperature readout in a program that monitors onboard temps and fan speeds, and that it may not necessarily be the CPU temp in BIOS that matters vs. the program. Thoughts?


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a c 436 à CPUs
November 19, 2013 12:54:28 PM

Yeah, it's not at dangerous temps anymore so no need to be worried. What's the other PC's CPU?
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November 19, 2013 12:55:57 PM

JOOK-D said:
Yeah, it's not at dangerous temps anymore so no need to be worried. What's the other PC's CPU?


i5-2500k

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a c 436 à CPUs
November 19, 2013 12:58:34 PM

Huh, weird. Could just be the chip, they're not all created equal. Anyway it seems to be under control so it should be fine.
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November 19, 2013 1:01:15 PM

JOOK-D said:
Huh, weird. Could just be the chip, they're not all created equal. Anyway it seems to be under control so it should be fine.


Well alright then. Thanks for all your help!

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a c 436 à CPUs
November 19, 2013 1:05:06 PM

Anytime.
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a c 127 à CPUs
November 19, 2013 1:43:44 PM

Does you case have many fans? Do you have turbo switch on, it should clock down to 1.6ghz at idle.

My 2500k idles at about 27-30ish, but I've got fairly good airflow.

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November 19, 2013 2:09:48 PM

RobCrezz said:
Does your case have many fans? Do you have turbo switch on, it should clock down to 1.6ghz at idle.

My 2500k idles at about 27-30ish, but I've got fairly good airflow.

M


I have five case fans installed:
2x120mm intake fans on front
1x120mm intake fan on side panel
1x120mm rear exhaust fan
1x140mm top fan exhaust

I believe I have good airflow, but this is my first build so...
I've zip tied all cables to minimize interference with air flow.

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a c 127 à CPUs
November 20, 2013 1:36:27 AM

Webslinger64 said:
RobCrezz said:
Does your case have many fans? Do you have turbo switch on, it should clock down to 1.6ghz at idle.

My 2500k idles at about 27-30ish, but I've got fairly good airflow.

M


I have five case fans installed:
2x120mm intake fans on front
1x120mm intake fan on side panel
1x120mm rear exhaust fan
1x140mm top fan exhaust

I believe I have good airflow, but this is my first build so...
I've zip tied all cables to minimize interference with air flow.



That sounds fine, ive only got 3x 140mm fans.

Sounds like you just have a hot chip. Strange.
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November 23, 2013 10:58:17 AM

My 2600k 3.4 OC'd to 4.4ghz runs 36-40c at idle. If you dont have the cpu oc'd that much, and not running much in the background it is running a tad hot, but the new cooler will save you. I run games on full ultra now and my cpu never goes over 61c with the hyper 212. Used to hit 90.

So you'd really only be saving 5-8c with a diff cpu or any additional troubleshooting. Not necessary. I have throttle disabled, so it's always 4.4 and can idle at 33-34 ish with absolutely nothing running.
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