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Having trouble getting even heat distribution with H90

post #1 of 9
Thread Starter 
Hey guys,

I have an H90 that i've been using for 3 months or so and i cannot seem to get the pump/cooling plate to provide consistent cooling on the processor.

First i was using whatever thermal paste i had available and i would see 70C after about 15mins on Prime95.

Cleaned it off, reapplied with ArcticSilver and it lowered temps slightly but during the mounting of the pump/plate, the paste really thinned out at the center of the proc and made a mess out near the edges.

I have more ArcticSilver and i want to mount this thing again, i am wondering if anyone has any tips or tricks to getting the paste to distribute evenly. I don't want to do anymore OC'ing until i have the cooling under control.
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post #2 of 9

70C sounds abotu right anyways.

Also, I wouldn't use AS5. Grab some MX-2 or MX-4, OCZ Freeze, etc as it is easier to work with and just put a blob in the center of the CPU about the size of a pea and put the block down, hold in place, then tighten the pressure plate.

If AS5 is all you can get, you want to thin it out REALLY thin (thinner than a sheet of paper) onto the CPU with a credit card or something.

This methode though, seems to work the best for AS5


Edited by Lord Xeb - 7/27/11 at 8:21am
 
Gsvlip Dudyrm
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Gsvlip Dudyrm
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post #3 of 9
Well be aware AS has a break in period of about 200 hours. Each processor has separate instructions on how to apply it. Here's the link http://www.arcticsilver.com/instructions.htm
    
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post #4 of 9
That sounds like a normal temp to me depending on your OC...
post #5 of 9
Thread Starter 
ya know, i guess i never thought about the possibility that this stuff would have a different application method.

i am going to give these options a try and hopefully reduce my temp fluctuation as i feel like this H90 should be able to keep me below 70C.

I will take a look around for some different thermal paste but i still have a decent chunk of the AS5 so i'm going to give that another try before i change to something else.
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Majin SSJ Eric View Post
That sounds like a normal temp to me depending on your OC...
One thing i am noticing is how much the temp goes up, under slight load. It will idle at 38/40/38/40 and it takes is the cpu to hit 10% and its hitting 50C or higher. The longer it stays at load, or if it hits a higher load... the temp shoots up accordingly.

The temps didn't climb that high, that fast, when i was using some generic thermal paste so i'm going to clean it off and try the previously mentioned methods.

Right now i am running 3.8ghz @ 1.245 and really feel like i should be able to a stable 4.2 but i want to make sure my temps are going to be no higher than 70C at full load.
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post #7 of 9
Quote:
Originally Posted by Faded View Post
One thing i am noticing is how much the temp goes up, under slight load. It will idle at 38/40/38/40 and it takes is the cpu to hit 10% and its hitting 50C or higher. The longer it stays at load, or if it hits a higher load... the temp shoots up accordingly.

The temps didn't climb that high, that fast, when i was using some generic thermal paste so i'm going to clean it off and try the previously mentioned methods.

Right now i am running 3.8ghz @ 1.245 and really feel like i should be able to a stable 4.2 but i want to make sure my temps are going to be no higher than 70C at full load.
The core temperature spikes when load increases are completely normal.

If you want to keep the cores under 70ºC under load with your i7-920 CPU at 4.2Ghz, you need a custom water cooling loop, the H70 is not even remotely capable of that at any normal ambient temperatures.
At best you will be able to get max load temps in the mid 70s at 4.0 Ghz, and high 70s to mid 80s at 4.2 Ghz.
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by Caleal View Post
The core temperature spikes when load increases are completely normal.

If you want to keep the cores under 70ºC under load with your i7-920 CPU at 4.2Ghz, you need a custom water cooling loop, the H70 is not even remotely capable of that at any normal ambient temperatures.
At best you will be able to get max load temps in the mid 70s at 4.0 Ghz, and high 70s to mid 80s at 4.2 Ghz.
I guess what i am trying to say is that the spikes are considerably steeper, since removing the original thermal paste and putting on the arctic silver. Before the AS5, i was barely seeing 54C during normal operation. Now i am seeing over 60C, during the same conditions.

I am going to use the credit card method, this evening and then let it take some time to set. We'll see if i can at least get it back to where it was with the generic paste.

Edit - Also, this is with an H90. I am not sure what the differences are from the H70
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post #9 of 9
The "generic paste" used as the stock TIM on the Corsair Hydro series coolers is the top end Shin Etsu stuff, which is significantly better than AS5.

Quote:
Originally Posted by Faded View Post
Edit - Also, this is with an H90. I am not sure what the differences are from the H70
Made by whom? Corsair doesn't sell an "H90".

Your sig says you have an H70, so I assumed "H90" was a typo or brain fart.

Either way, if it just has a 120mm radiator, and a weak pump/CPU block combo, your expectations of it are way to high. Its performance is roughly equivalent to some of the better air coolers.
Edited by Caleal - 7/28/11 at 2:25pm
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