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I5-2500k High Temperature

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January 17, 2012 5:18:21 PM

Hello,
I am getting around 68c in BIOS, 30-40c idle and 60-85c when playing World of Warcraft. Which is the main reason I bought his system.

I tried a Prime95 test and the temp was 90c in under 1 minute so I stopped it straight away.

My setup is
Gigabyte GA-H61M-DS2 Intel H61 (REV B3)
Intel Core i5-2500K 3.30GHz
8GB G.Skill RipJawsX (2x4GB) DDR3 1333MHz
Asus GeForce GTX 560Ti DCII/2DI/1GD5 DirectCU II 1024MB GDDR5

The case I have has 1 intake fan on the front. The power supply is mounted at the bottom of the case and there is no exhaust fan at the rear.

I am using stock heatsink and fan and when I installed it I made sure all pins were clicked down fully.

Why our my temperatures so high? and what should I do to reduce them?

More about : 2500k high temperature

a b à CPUs
January 17, 2012 5:25:52 PM

well having no exhaust fan would be the likely cause

try with the side off the case to see how much cooler it is
a c 85 à CPUs
January 17, 2012 5:36:29 PM

if you open the case do you get the same result?

+1^ more airflow in the case would help, the heatsink can only work if it has air to work with.
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January 17, 2012 5:44:12 PM

I have took the side off the case and just turned the machine on after being switched off for well over 2 hours, the idle temp is around 25-30 degrees.

I have just tried the prime95 test again but with the same results reaching 90 degrees after only one minute.
January 17, 2012 5:51:01 PM

Here are the results for the prime95 test i did 5 minutes ago with the side of the case off.
a b à CPUs
January 17, 2012 6:09:40 PM

well i would have to say double check all the heatsink pins are properly engaged--gently pull them upwards

without twisting them--they shouldnt move if they are in right

failing that check the cpu voltage when its under load with cpuz in case its auto volting too high

January 17, 2012 6:32:24 PM

I don't know much about voltages but here is a screenshot of CPUZ when I put the cpu under load

a b à CPUs
January 17, 2012 6:40:49 PM

that cpu voltage is fine

just leaves the heatsink--did the stock one have thermal paste on it and did you double check the pins?
January 17, 2012 6:56:52 PM

It had some greyish strips in it so I assume that was the paste. I have just checked the pins again and they won't budge. I tried pulling them and then pushing them down to make sure they were clicked in.

I have ordered some Arctic Silver 5 and a fan for the rear, I hope the helps.

Do you think its possible that because the motherboard was cheap (£40) the thermal readings are incorrect?

Even when it is operating at 80-90c the system seems stable.

And are my fan speeds ok, they only went to 1900 RPM at 90c
a b à CPUs
January 17, 2012 7:08:40 PM

its possible its reading the temperatures incorrectly

1900rpm might be the maximum speed--i never use stock heatsinks so dont know

try the artic silver and exhaust fan to see what happens

an after market heatsink may also be an idea once you have an exhaust fan--assuming your case is big enough

the hyper 212 is cheap and very effective
January 17, 2012 7:19:43 PM

I cant find out any where what the max fan speed is, But my girlfriends stepdad says his goes at 2600 when its on 60c so I'm not sure what to think.

I have looked at the hyper 212 and was thinking about getting it but the stock heatsink should be capable of keeping it at the correct temp according to most people and websites I have looked at.

Thanks for the help anyway I will see if the fan and artic silver help
January 17, 2012 7:25:46 PM

First of all, BIOS may show temps about 10 degree higher. Best you check temps with CPUZ. Also you need rear fan. 2500k average idle temps between 30 and 40 degree. Load should be around 60, if OCed and using after market fan, it can be 70.
a c 163 à CPUs
January 17, 2012 7:32:05 PM

The heatsink is definitively the problem. How do I know? Your gpu and hdd have good temps but there should be no reason why the cpu is idling that much higher. I'm currently 33-38C on cpu vs 31C gpu/hdd idling. The pins may feel they are in all the way but it's good to check the backside to see if the pins are all the way in. It's very common for people to think it's on correctly when it's actually not. The stock hsf will hit around 70C at full load. The bios will show higher temps because the cpu doesn't idle til it gets into windows.

Cpuz is getting an incorrect vcore reading which is common on gigabyte SB chipsets, you need to use the gigabyte software but I've never seen incorrect core temp readings for any SB cpu or mobo.
January 17, 2012 9:22:04 PM

Im on around 38C and load is around 2-5%. Just google chrome open. I have just been playing WoW and was on about 60c most of the time. 2 of the cores hit max 80C whilst playing and the load was about 80% and 95% on the 2 cores that hit 80C

These load temps worry me the most, am I damaging my CPU even for the short time I was on the game?

In regards to the fan, im sure the white prongs came out the back of the motherboard when I installed it because I checked them.

It feels like the motherboard will snap if I pushed the pins down any more so I guess i will have to take the mother board out and put it on a better surface and double check the back of it.
January 17, 2012 9:33:42 PM

There is definitely a issue with the way the cooler was placed, I would order some artic silver also its very cheap.
January 17, 2012 9:38:25 PM

I have ordered some and it will be here in 2-3 days, so I guess I will have to wait until then :( 
January 19, 2012 1:25:32 PM

The Cooler Master Sickleflow fan and Arctic Silver 5 have just arrived. I have installed the fan and thought I would test the temps again before taking everything apart and applying the thermal paste.

These are the idle results.



Here are the results of the Prime95 test after only 2 minutes.



Do you think I will defiantly have to apply the Arctic Silver 5 or are these temperatures ok?

January 19, 2012 1:54:33 PM

Way too high on load. When running prime95 with my 2600k oc to 4.2 i barely hit 60c. And ive got the same cooler and thermal paste.
January 19, 2012 2:01:53 PM

Im using the stock cooler and stock paste at the moment
January 19, 2012 2:07:00 PM

gotcha, you'll see a huge difference with the 212 evo and arctic silver.
January 19, 2012 2:14:48 PM

Is it still to high for stock cooling though?
January 19, 2012 2:36:03 PM

yes for sure, i believe the safe zone for those chips is 75c. If you're going over, you're gonna damage the processor.
a c 163 à CPUs
January 19, 2012 4:09:38 PM

k1114 said:
The stock hsf will hit around 70C at full load.

It's weird that your idle temps are that low and load temps are that high. Although I've seen this before when another person didn't have their hsf on all the way. Apply the new thermal paste. Prime can be safe to go to 80C since it's an unrealistic stressful workload but intel rates the tcase at 72.6C which I use for normal operation safe temps.
January 19, 2012 6:06:09 PM

I have just applied the thermal paste. I followed the step by step instructions and the instructions for placing the HSF on. Idle temps are ok again but the CPU gets to 80C and the Cores get to 90C in a matter of seconds on Prime 95 :( 
a c 163 à CPUs
January 19, 2012 6:22:10 PM

Try another temp monitoring software, although I doubt that is the issue, but it's good to have comparisons. Your mobo isn't warped and the hsf is fine? The thermal paste appeared to be evenly spread? I know it's unlikely that these are the issue but just covering all the bases. What are your temps during gaming? You may just need to get an aftermarket hsf to solve this temp issue.
January 19, 2012 6:31:21 PM

Ive tried a few different monitoring softwares HW monitor, CPUZ, AIDA64, OpenHardWareMonitor, etc. All pretty similar results. No problems with the motherboard of hsf that I can see.

As far as the paste goes I followed the instructions on the Arctic Silver website for the i5 processors. Which was the vertical line method, I then just lowerd the hsf down on top of the cpu and locked it into place pushing the pins down as hard as I could until they clicked into place.

I would like to get Cooler Master 212 but it is just frustrating that I will have to spend more money when the stock hsf should be adequate.
January 19, 2012 7:48:46 PM

I am playing World of Warcraft atm and max temp on CPU has reached 63C and max on cores 75C
January 19, 2012 8:14:46 PM

Froggy_86 said:
I am playing World of Warcraft atm and max temp on CPU has reached 63C and max on cores 75C


When you get the new cooler, run prime and then report temps.
January 19, 2012 9:12:10 PM

Here is the results after gaming (WoW) for about 2 and a half hours

January 19, 2012 9:23:18 PM

Weird. My 2500k idles at 20-25 and at stress is around 60. I have Zalman fan though. I think ur problem is ur heatsink. Spend extra $30 and sleep better at night. Imo don't even run prime or game till u get it
January 19, 2012 9:46:57 PM

So it's not possible to fix without a better cooler?
a c 163 à CPUs
January 19, 2012 10:21:38 PM

Push pins turn to lock in. Just making sure since you only said push. There shouldn't be a click, and you should not have to push as hard as you can. It slides in the mounting holes as easy as pie, barely have to push for the locking pin and turn to lock. Sounds like you are in the locked position and possibly breaking something.
January 20, 2012 1:00:17 AM

Technically you should be fine at stock clock. But in your case there seems to be a problem.
January 20, 2012 11:42:01 PM

What kind of voltage should I be getting when under 100% load btw? I am getting around 1.4 at the moment is that to high or normal?
a b à CPUs
January 20, 2012 11:47:47 PM

1.4v is too high unless your seriously overclocking

my 2600k is at 5ghz on 1.4v
January 20, 2012 11:52:45 PM

I am not overclocking at all, the cpu is at 3.3ghz and goes to 3.7ghz with turbo boost. If i reduced the voltage would it interfere with the turbo boost and also interfere when the cpu idles at 1.6ghz?
January 21, 2012 12:04:16 AM

mcnumpty23 said:
1.4v is too high unless your seriously overclocking

my 2600k is at 5ghz on 1.4v


What kind if vcore do you recommend then? I wont be going over 3.7ghz.
a b à CPUs
January 21, 2012 12:05:17 AM

is your cpu voltage set to auto in the bios?

could be its auto volting too high and thats causing the high temps under full load

try setting it to about 1.1 to 1.15 manually to see what happens

a b à CPUs
January 21, 2012 12:08:40 AM

i also say 212 evo push pull and artic silver 5
January 21, 2012 12:11:53 AM

mcnumpty23 said:
is your cpu voltage set to auto in the bios?

could be its auto volting too high and thats causing the high temps under full load

try setting it to about 1.1 to 1.15 manually to see what happens


2 options in the BIOS for voltage are:

Dynamic Vcore (DVID) = +0.300v
QPI/Vtt Voltage = Auto

What should I set these as?
a b à CPUs
January 21, 2012 12:18:25 AM

my options are different in my bios

but dynamic vcore may be what you are looking for--can you lower that?

qpi/vtt i think is the memory controller voltage

but its 2.15am here and my sleeping tablets are kicking in so things getting a bit fuzzy now
January 21, 2012 12:20:37 AM

I think I have just fixed it I changed Dynamic Vcore (DVID) of +0.300v to Auto. Ran Prime95 for 3 minutes and didn't get above 65C. Just read the motherboard manual and it says Dynamic Vcore (DVID) should of been set to Auto as default and not +0.300v.

I have no idea how that setting changed because I never really use BIOS only to check the Temprerature of the CPU and I hadn't changed any settings.

I wonder if my motherboard had been used before I got it because the box it came in wasn't sealed. Is this normal for motherboards to come like that?
January 21, 2012 12:28:53 AM

The only thing now is that my CPU only goes to 3.3ghz max and is not going to 3.7ghz (Turbo Boost)
a b à CPUs
January 21, 2012 12:29:02 AM

well that temperature looks better

so must have been the problem

think my latest board the box wasnt sealed
a b à CPUs
January 21, 2012 12:30:36 AM

Froggy_86 said:
The only thing now is that my CPU only goes to 3.3ghz max and is not going to 3.7ghz (Turbo Boost)



just up the multiplier to 37 if turbo boost isnt kicking in should still use about the same cpu vcore
January 21, 2012 12:36:52 AM

Ok I will try 37 now. Thanks alot for the help and thanks to everyone who tried to help!
a b à CPUs
January 21, 2012 12:39:55 AM

Froggy_86 said:
Ok I will try 37 now. Thanks alot for the help and thanks to everyone who tried to help!



no problem

going to crash now
January 21, 2012 1:34:39 PM

madchemist83 said:
So any luck?


Temperatures seem stable now when tested with Prime95 they were around 60-64C and didn't rise anymore than that after 5 mins.

While gaming max is around 49C so much better.

The turbo boost looks like it is working but all the cores were going to 3.7 at the same time when the voltage was 1.4.
January 22, 2012 12:27:42 AM

Try setting ur vcore manually to 1.2
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