Procesor overhating - i5 2500k

sdanseo

Hi folks

I'm having terrible problems with my processor overheating under even tiny loads; in fact even at idle.

I'm using a plethora of different programs to check temperature - Speedfan, Coretemp and Speccy mainly - all give the same result. Basically, if I run a game (mainly FSX, for me) the processor temperature will average 70-78 degrees and peak at nearly 90 in some cases.

My case fans were plugged directly into the case power cord; I've since plugged these into the motherboard (Asus P8P67-Pro Rev 3.1) but no difference. Speedfan seems to give me no direct control over fan speeds whatsoever.

I'm terribly afraid that I've been running the processor this hot since I built the system myself about 10 months ago.

More bizzarely, I downloaded CPU-Z and Coretemp in an effort to have a closer look at what the 2500k is doing to itself - CPU-Z shows the voltage varying wildly between 0.89 and 1.2v and shows an internal clock speed of 1680MhZ - while Coretemp says the speed is 3399MhZ - remember stock should be 3.3GhZ and I haven't even so much as attempted to overclock.

I've checked all the case/CPU fans, cleared out dust etc so it's not that. The CPU fan has always spooled up under load as you'd expect but it's always been rather erratic and thus far I never really paid it much attention. Now though, I'm worried.

System: P8P67-Pro Rev3.1 Corsair 650W MSIGTX560Ti W7x64 8GB RAM Spinpoint 1TB.

See attached screens:



The following was over a few minute period while under load:


Any advice?

sdanseo

Seems I solved my own problem to an extent - reseated the processor heatsink about 5 times and finally ended up with these results (this is under the same load as above):



Great for temps, but on coldest core 12 degrees below the hottest? Normal?

Overheal

sounds like too much thermal compound on the cpu. you dont need much.

also the speed control is dependent on your motherboard. If you want a motherboard with *fantastic* thermal and fan control the ASUS Sabertooth series of boards allow extremely good manual control of your fans and a plethora of thermal sensors.

sdanseo

Overheal wrote: »

sounds like too much thermal compound on the cpu. you dont need much.

also the speed control is dependent on your motherboard. If you want a motherboard with *fantastic* thermal and fan control the ASUS Sabertooth series of boards allow extremely good manual control of your fans and a plethora of thermal sensors.

I thought of the thermal compound, so i tried putting on a little less. Computer powered down automatically after the CPU hit 97 degrees.

Going to order a new cooler, extra CPU fan to run push/pull, and a couple of extra case fans. Will run with the present setup until then unless advised not to as even under load, the CPU is not hitting 70 as it was before - the temperature difference is concerning, but once it doesn't overheat it can't do any harm I presume?

yoyo

Those push pin cpu heatsinks are a pita to install, I find the easiest way is to install them while the motherboard is out of the case, and make sure all the black pins are snapped into the white holder on the rear of the motherboard. If the heatsink is slightly loose the cpu will overheat (been there )

Nick

Nothingbetter2d

sdeire wrote: »

I thought of the thermal compound, so i tried putting on a little less. Computer powered down automatically after the CPU hit 97 degrees.

Going to order a new cooler, extra CPU fan to run push/pull, and a couple of extra case fans. Will run with the present setup until then unless advised not to as even under load, the CPU is not hitting 70 as it was before - the temperature difference is concerning, but once it doesn't overheat it can't do any harm I presume?

is your motherboard bios old? try patching the bios to the latest version... often early bios versions on motherboards have problems with cpu fan speeds or temp regulating.

i had one pc where the temps were being misreported and the cpu fan would not speed up when the cpu got hot... after a bios upgrade the problem was fixed.

sdanseo

Nothingbetter2d wrote: »

is your motherboard bios old? try patching the bios to the latest version... often early bios versions on motherboards have problems with cpu fan speeds or temp regulating.

i had one pc where the temps were being misreported and the cpu fan would not speed up when the cpu got hot... after a bios upgrade the problem was fixed.

Cheers, will have a look. Just ran the game for an extended period of 40 mins or so and it crashed, screens just blanked one grey one white - had to force reboot. Funnily, since I did this maintenance the fans spool up for a few seconds once or twice, spooling down again, then on the second or third go come on and the machine boots.

Also, my system now boots significantly faster - it was taking 3-5 minutes to get to the password screen where now it's taking 30 seconds. Makes me really worry that I've damaged the processor.