CPU Overheating after clean reinstall

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vae victus

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Feb 1, 2013
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Hi guys, my specs
Core 2 Duo E8500 @3.16 GHz non-OC
Gigabyte EP43-DS3L (Socket 775)
896mb GeForce GTX 260 EVGA
4 gb DDR2 800 MHz RAM
320 GB WB HDD

I was transporting my computer and i guess i hit a bump and my CPU heatsink popped off, it's the stock heatsink that came with the CPU.

I scraped off the old thermal paste and applied some new stuff, coolermaster that came with one of the new parts i got for a new pc. Turned the PC on, didnt go thermal shutdown so i assumed everything was hunky dory.

Reformatted my computer and upgraded from Win XP to Win7 Ultimate in the process.

I was OCing the GPU for the first time and thus starting to really pay attention to temps, thats when i noticed that my CPU idle temp is now hovering at 45 degrees when it used to hover around 28-32 degrees cel before. I use Core Temp and CPU-Z. I had to move my computer and its airflow might be an issue, its right next to a wall but i've got about 5 inches in between. The old location next to an open window when i was gaming, but i dont think that would account for such a sudden jump in temperature.

Also, when I was gaming, I noticed that my CPU was jumping up to the low to mid 90s in temp and i KNOW that is definitely a bad thing. I was thinking of overclocking my cpu a bit as well, but obviously that's gonna be a nogo now. Coretemp now has a ! mark next the cpu temp, and from what i read a CPU shouldnt go higher than 80 degrees, even when OCing.

Obviously something is now really wrong. I figure i can blow the dust out of the internals again, reapply the Heatsink, and try to improve airflow.

Before when i gamed on it, i never saw the temp go higher than 75 degrees.

Is there something else i'm missing that might be the issue? It seems is cant game on this PC anymore unless i do something about the CPU temp, otherwise i'm gonna burn it out.
 
Solution
MauveCloud
I recommend getting an aftermarket cpu cooler that bolts through the motherboard, instead of relying on snap-in pushpins, since the bolts would be less sensitive to wear and/or poor tolerances on the mounting holes. Here are some inexpensive ones that will fit lga 775 with decent ratings at Newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835150088
http://www.newegg.com/Product/Product.aspx?Item=N82E16835150083
http://www.newegg.com/Product/Product.aspx?Item=N82E16835106157

If you're willing to spend a little more, you can get another hyper 212 evo, or the plus version, both of which will fit lga 775.

As far as the thermal compound, unless it's several years old, it should be okay. In your initial post, you said it was...
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vae victus

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Feb 1, 2013
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Another thing is. I got a new I5 3570k and a Cooler Master Hyper Evo for it. Would the stock fan for this cpu be better than my existing stock cpu fan? I was reading up on it and it seems that while different sized, u can jury rig it to where it will fit. Thus would the hassle be worth it?
 
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vae victus

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Feb 1, 2013
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Too much Thermal paste? Crud, i didnt feel like i put that much, but i guess i can redo the process while i'm monkeying around in it. Using the stock cpu fan from the i5 would be nice, its already got a layer of thermal paste on it so i dont have to bother!
 
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Greatatlantic

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Mar 17, 2013
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If you think the stock cooler was applied correctly, it may be a dying/dead fan. Those things have a lifespan. Because metal does not go bad.

If you aren't overclocking and you aren't going for a quiet case, there is no reason to spend above a stock cooler.
 
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vae victus

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Feb 1, 2013
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Ugh this is frustrating. Temps still the same. Mid 40s idle, crazy high >80 when gaming

Step by step what i did.

Took off the heatsink (the thermal paste was still surprisingly moist so i guess i put too much), reapplied a smaller amount (just 1 drop), plugged it back on. Out of curiousity how tightly mounted should the heatsink be? When i fiddled with it after i reattached it, it seems to have some wobble. Blew all the dust out. Slapped it together and tested. Results as noted above.

Im using Cooler Master Thermal Compound Kit.

This is really starting to bug me, i really want to experiment on OCing for the first time, but if the CPU isnt properly cooling then i'll kill it in a hurry. My GPU is working like a charm while checking temps its running nice and cool while gaming <60 degrees, so i really dont think room temp is an issue.

A friend suggested i need to take the WHOLE thing apart and put it back together piece by piece, making sure the heatsink is properly screwing into the mobo. I really hope i dont have to do that since it increases the complication level. I'm almost at the point where i'll spend 20 or so bucks for a good CPU cooler so i can continue with my nefarious plans in abusing it.

Thank god my new i5 3570k with the Hyper EVO is running cool as a cucumber. I'm starting to reach the point where i'm gonna move the old comp to its old spot by the window (where my new comp is currently sitting) and seeing if being next to an open window is the whole reason why it was running cool before.
 
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Greatatlantic

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So, the fan is spinning? On the CPU? That is important.

The heatsink itself should be pretty snug. If there is space and its not making contact, then it is useless. There will be some "wiggle" room, but is with the motherboard itself.
 
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MauveCloud

MauveCloud

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If the heatsink wobbles after installation, it's not properly seated. Given your initial description that the heatsink popped off on its own, there's a good chance one of the pushpins or holes is damaged to the point that the stock cooler can no longer be seated securely. However, I don't know if you rotated the pushpins into their locking position, which could also be a problem.
 
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vae victus

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Feb 1, 2013
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CPU fan is spinning.

But yea looks like i didnt put it in correctly hence the wobble. I'll give it another go later and see if i can mount it right. If that still doesnt do the trick, i wonder if i should get another stock heatsick/fan or buy an aftermarket. I'm thinking for this situation buying a good after market cooler can do wonders when i start OCing. I wonder if the thermal compound i'm using is good enough a well, like i said, its so free stuff that came with something. Would using a better one help?
 
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MauveCloud

MauveCloud

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May 7, 2010
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I recommend getting an aftermarket cpu cooler that bolts through the motherboard, instead of relying on snap-in pushpins, since the bolts would be less sensitive to wear and/or poor tolerances on the mounting holes. Here are some inexpensive ones that will fit lga 775 with decent ratings at Newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835150088
http://www.newegg.com/Product/Product.aspx?Item=N82E16835150083
http://www.newegg.com/Product/Product.aspx?Item=N82E16835106157

If you're willing to spend a little more, you can get another hyper 212 evo, or the plus version, both of which will fit lga 775.

As far as the thermal compound, unless it's several years old, it should be okay. In your initial post, you said it was Cooler Master brand, so I'm guessing that's the tube that came with your Hyper 212 EVO that you bought for your i5-3570k, which should be just fine, though if the new heatsink for your core 2 duo comes with a pre-applied thermal pad, it might be simpler to just use that.
 
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Solution
V

vae victus

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Feb 1, 2013
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Yea looks like going with the Hyper Evo is prolly the best move. In theory i can eke out another coupla years of gaming on this computer on low end graphics with an OCed CPU and GPU. I also intend to swap in my used gtx 560 ti from my new computer when when i upgrade its GPU.

So in theory it'll look like this in 2 years

Core 2 Duo E8500 at least @4.00 GHz OCed thanks to the EVO
Gigabyte EP43-DS3L (Socket 775)
1 gb MSI GeForce GTX 560 ti Twin Frozr ii (OCed to at least to 880/2100)
4 gb DDR2 800 MHz RAM
320 GB WB HDD
650w Corsair PSU

So far it looks like i'll be shelling out at least 35 bucks for the cpu cooler. Call it anywhere from 300-400 when i get my new GPU, but i wont factor that into this computer. I wonder if there's a way for my to upgrade my mobo cheap to DDR3 capable RAM. In a way, i kinda wished i had gone all these steps instead of buying a new computer and waited for another generation of CPUs and GPUs to come out. Haha, oh well, live and learn, i'm actually having alot of fun digging deeper into how computers work. This whole OC project is really fun.
 
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vae victus

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Feb 1, 2013
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The Hyper EVO is in and is performing as expected. Idle temps of 28-32, intensive game temps fluctuating around 50. Now its time for some OCing.

Again thank you for everyone's time and help.
 
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