CPU still overheat even I replaced my stock cooler

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OKCKD35

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Sep 7, 2015
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Hi ALL

I have replaced my stock cooler with a Cooler Master T2 blizzard, I believe I have installed it correctly but when I check my temp.. the temp goes way high..100c when I play 2k15.. and idles at 47-50 Celsius

I have a i5 4690K CPU

Thanks!
 
Solution
Darkbreeze
Good luck. Keep in mind, you should NOT tighten all screws one at a time. Only start each screw a few threads until they are all started, then tighten them in a X pattern a few turns at a time until they are all tightened, if you have that style of mounting hardware. If it has push pins, push harder, but not too hard. If you have to use extreme force, then something is not right. Double check the alignment of the mounting bracket on the heatsink base to verify it is seated correctly and nothing is blocking you.
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Darkbreeze

Darkbreeze

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Do you apply thermal paste and if so, how much? Those temps are way too high. Something is wrong. Either you have incorrectly pasted or the heatsink is not mounted with the correct pressure. I'd start over and double check the mounting. This tutorial is not in English but you'll get a visual on the installation anyhow. Keep in mind, it's just for reference, and they're not pasting in the tutorial.

Also, make sure you have the fan mounted correctly, on the side of the heatsink facing the front of the computer with the fan blowing through the heatsink, toward the rear exhaust fan.

https://www.youtube.com/watch?v=i0T_4xEew_Y

 
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OKCKD35

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darkbreeze.. Thanks for the reply..
Yeah I apply thermal paste that comes with the cooler.. and spread it evenly.. hmm.. I am having trouble securing the last stand(idk what to call it..) of my cooler.. but the other three are mounted correctly.. is the possible cause of hign temp?


Thanks!
 
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Solandri

Solandri

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Jan 4, 2012
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Spreading it evenly isn't as important as using a tiny amount. The vast majority of the heat transfer is from metal-on-metal contact between the CPU and heatsink. If you've got a layer of thermal paste in there like mayonnaise on bread, that's way too thick and will make things worse than having no paste at all. The role of the paste is only to fill in microscopic air gaps between the CPU and heatsink. The paste manufacturers try to get you to use a lot of it, but you only need about a half pea sized dollop.

And yes if one of the screws isn't clamping down, that will affect the temps. The spring-loaded screws compress the heatsink and CPU together, (1) holding them flat against each other, (2) squeezing out excess paste thus increasing metal-to-metal contact, and (3) compressing microscopic metal ridges so they deform and increase the amount of metal-on-metal contact surface area. All four screws need to be secured and compressed properly.
 
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OKCKD35

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I am having trouble securing that fourth screw.. anyway will try to do it again when I got home later.

Thanks. will update this thread

 
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Darkbreeze

Darkbreeze

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Good luck. Keep in mind, you should NOT tighten all screws one at a time. Only start each screw a few threads until they are all started, then tighten them in a X pattern a few turns at a time until they are all tightened, if you have that style of mounting hardware. If it has push pins, push harder, but not too hard. If you have to use extreme force, then something is not right. Double check the alignment of the mounting bracket on the heatsink base to verify it is seated correctly and nothing is blocking you.
 
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Solution
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alexandergc

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as Darkbreeze said, screw them all in a couple of turns, then go in an X-pattern a couple of turns each time to make sure you're getting even pressure on all the screws.

You might need a few tries to get it done correctly, but remember that
a) you have a lot of leftover thermal paste and
b) you have every reason to get it done right.

I nearly fried my rig once while replacing my stock cooler in a rush, so it pays to be very, very careful when you're doing these things.

1) Take your time and get it right.
2) Don't get frustrated if you can't get everything in the first time.
3) Re-check the instructions, make sure everything is correctly aligned, then try securing the cooler again.
4) If you do get frustrated, take a few minutes to just breathe. Go make a coffee or something, then come back to it when you're nice and calm again.
 
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OKCKD35

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Thanks everyone, It seems the cause of the overheating is the loose fourth mount and also I just figured out last night that I can remove the fan from the heat sink (yeah I know, newbie problem.. hahaha). After secring all four mount and using the pea size method when applying thermal paste the temp went down to 32c .. actually I am expecting lower.. but nonetheless thanks everyone. appreciated all the replies :D
 
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Darkbreeze

Darkbreeze

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I wouldn't expect anything lower with that cooler. That's not a high end cooler, and is actually not a whole lot better than the stock cooler. If you want substantially improved cooling you need a 120 or 140mm cooler, not a 92mm cooler that's also a fairly old design. The minimum I'd recommend for that if you plan to overclock would be a Hyper 212 Evo or Cryorig H7. Better would be a Cryorig H5 or Noctua NH-U14S or even something higher end, if you want to see sub 32°C temps.

It also matters greatly what your ambient room temp is. You can never get below ambient temp with air or water cooling, so keep that in mind. If your room is rather warm, your CPU temps will be higher accordingly.
 
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alexandergc

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Generally speaking, your idle temps will always be ~5C above ambient (or so I've noticed with Intels anyway), so that's a good rule of thumb to see if your cooler is doing its job (if not great, at least better than the stock cooler).
 
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