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Windows 7: Thermal Compound, how much of a difference does it make?!

25 Nov 2010   #1
kerfuffler

Windows 7 home premium 64Bit
 
 
Thermal Compound, how much of a difference does it make?!

So, recently I have had to take my PC into a computer shop for some assistance as I was stuck on a failing to boot problem for a while ( Turns out a replaced a faulty PSU with another, brand new faulty one). Also, when getting a new PSU, I also upgraded my case to the NZXT Lexia S, which has 5 120mm case fans.

When I collected the PC, they had left the CPU cooler off, so naturally I thought best to re-apply the thermal paste, as I had none left I asked the shop for some and kindly free of charge they gave me some. It was the bog standard 'Cooler paste' with a conductivity off >1.93 W/m-k, when I used to have some Arctic Silver stuff ( Can't remember what type).

Now, my problem is my CPU AMD 64x2 6000+ idles at around 50-51C and full load around 63-65c!!
Surely with my new case it should be running cooler? (Not sure exact temperatures)
So I'm asking, is it the thermal paste that is causing so much difference!?

Thanks for your time!


My System SpecsSystem Spec
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25 Nov 2010   #2
scrooge

win 7 ( 64 bit)
 
 

i'd try resetting the heatsink or check the heatsink and make sure it's on right .
if it's pushpins make sure you have them locked down.

scrooge
My System SpecsSystem Spec
25 Nov 2010   #3
kword88

windows 7 ultimate 64bit
 
 

my first thought would be to find a new repair shop. aside from that i would make sure they reconnected all the fans and that they are not obstructed by anything. also, too much thermal paste can cause overheating.
My System SpecsSystem Spec
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25 Nov 2010   #4
SledgeDG

Windows 7 Ultimate x86
 
 

65C is still inside the allowed temps, IIRC.
I'd say it's most important that #1 thermal compound has been used and #2 that it has been applied correctly. True..there is a difference in effectiveness between low cost/standard grade and the better brands like arctic silver. But by no means it would make a 10 degree difference...5-6 degrees at best. What I'm trying to say is: if you look to lower the temps dramatically, it's not the compound brand I would worry about.
Make sure the heat sink is seated correctly and the air flow is not obstructed by cables, extension cards etc. If that all doesn't get you where you'd like to be, maybe consider replacing the stock cooler with a more efficient system.

-DG
My System SpecsSystem Spec
25 Nov 2010   #5
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Arctic Silver helped on my system measuredly lowered temps when I switched over 18 months ago, dropped an extra 3-5 @ idle and 10 at full bore!
My System SpecsSystem Spec
26 Nov 2010   #6
DirtyElf

Windows 7 64-bit Home
 
 

65 at full load doesnt seem that high, 51 idle is kinda high though
My System SpecsSystem Spec
26 Nov 2010   #7
SlackerITGuy

Windows 8.1 Pro
 
 

Quote   Quote: Originally Posted by kerfuffler View Post
So, recently I have had to take my PC into a computer shop for some assistance as I was stuck on a failing to boot problem for a while ( Turns out a replaced a faulty PSU with another, brand new faulty one). Also, when getting a new PSU, I also upgraded my case to the NZXT Lexia S, which has 5 120mm case fans.

When I collected the PC, they had left the CPU cooler off, so naturally I thought best to re-apply the thermal paste, as I had none left I asked the shop for some and kindly free of charge they gave me some. It was the bog standard 'Cooler paste' with a conductivity off >1.93 W/m-k, when I used to have some Arctic Silver stuff ( Can't remember what type).

Now, my problem is my CPU AMD 64x2 6000+ idles at around 50-51C and full load around 63-65c!!
Surely with my new case it should be running cooler? (Not sure exact temperatures)
So I'm asking, is it the thermal paste that is causing so much difference!?

Thanks for your time!
Yup, very high on both ends.

I'd recommend re-applying the thermal paste, and making sure the CPU cooler is properly mounted.
My System SpecsSystem Spec
26 Nov 2010   #8
ickymay

win7 ultimate / virtual box
 
 

i use the same cpu and I found the heatsink and fan I use is important then installing it properly with a thin layer of heatsink paste gave me best results

using an Arctic Cooling Freezer 64 Pro I achieve steady temps of 38 deg C at idle and never any higher than 50 deg C under full load

the contact between the polished surface of the CPU and the polished base of the heatsink is critical for effective cooling and the heatsink paste is used to fill in the imperfections in these contact surfaces, so you can imagine only a very thin smear should be necessary

In the earlier days of computing when overclocking I used to flatten out and polish the CPU and heatsink surfaces to maximize metal to metal contact and this always worked better than a thicker layer of heatsink paste, but with todays CPU's and good quality heatsinks this is no longer neccesary
My System SpecsSystem Spec
26 Nov 2010   #9
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Quote   Quote: Originally Posted by ickymay View Post
i use the same cpu and I found the heatsink and fan I use is important then installing it properly with a thin layer of heatsink paste gave me best results

using an Arctic Cooling Freezer 64 Pro I achieve steady temps of 38 deg C at idle and never any higher than 50 deg C under full load

the contact between the polished surface of the CPU and the polished base of the heatsink is critical for effective cooling and the heatsink paste is used to fill in the imperfections in these contact surfaces, so you can imagine only a very thin smear should be necessary

In the earlier days of computing when overclocking I used to flatten out and polish the CPU and heatsink surfaces to maximize metal to metal contact and this always worked better than a thicker layer of heatsink paste, but with todays CPU's and good quality heatsinks this is no longer neccesary
Great info icky...

Id like to add that if you are unfamiliar with how to properly apply thermal paste/grease/goo there are plenty of videos out there willing to show you how.

Here are a few recent ones...
Arctic Silver Incorporated - Route to Product Instructions for Arctic Silver 5
How-To: Properly Apply Thermal Paste and Install a CPU | Maximum PC
and plenty on youtube too!

Oh, and while you have the cooler off, Id suggest going to an aftermarket cooler!
My System SpecsSystem Spec
27 Nov 2010   #10
kerfuffler

Windows 7 home premium 64Bit
 
 

Quote   Quote: Originally Posted by ickymay View Post
i use the same cpu and I found the heatsink and fan I use is important then installing it properly with a thin layer of heatsink paste gave me best results

using an Arctic Cooling Freezer 64 Pro I achieve steady temps of 38 deg C at idle and never any higher than 50 deg C under full load

the contact between the polished surface of the CPU and the polished base of the heatsink is critical for effective cooling and the heatsink paste is used to fill in the imperfections in these contact surfaces, so you can imagine only a very thin smear should be necessary

In the earlier days of computing when overclocking I used to flatten out and polish the CPU and heatsink surfaces to maximize metal to metal contact and this always worked better than a thicker layer of heatsink paste, but with todays CPU's and good quality heatsinks this is no longer neccesary
Thanks for the advice, cooler sounds good! I think I'l try it out, looks better than my current CPU cooler.

Also, I've noticed it comes with cooling paste pre applied, so I would only apply to the CPU myself?
My System SpecsSystem Spec
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 Thermal Compound, how much of a difference does it make?!




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