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Topic Title: Thermal Grease/paste
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Created On: 09/02/2009 12:24 AM
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 09/02/2009 12:24 AM
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Al-123
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Joined: 09/02/2009

I have just purchased this Phenom 955 CPU and my question is:

There is already some thermal paste on the lower surface of the heatsink fan assembly which comes with the CPU, so when installing the heatsink fan do I need to spread some more thermal paste on the CPU upper surface before I install the heatsikn or the amount of thermal paste on the heatsink would be enough???

Thanks in advance.
Al

Edited: 09/02/2009 at 12:38 AM by Al-123
 09/02/2009 01:21 AM
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Speedwayaudio
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No don't put anymore on it. If you have to take it off again make sure you clean the old stuff off and re-apply new.

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 09/02/2009 01:31 AM
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Holy Drink
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No need to add any thermal grease. The stock heatsink usually comes with all the thermal grease recommended for stock speeds. Unless it seems that it may not be enough to cover most or the entire mating surface (which would be optimal) of the cpu contacting the heatsink . I would recommend removing the stock grease and using a aftermarket grease just in case later on you want to overclock some. Personaly I use Artic Silver 5 works great on large surface contact areas probably see 5-10C deg drop if applied properly (very thin layer). Cons.... slightly conductive dont get it on any bare circuit areas.

Edited: 09/02/2009 at 04:14 AM by Holy Drink
 09/02/2009 10:00 AM
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Al-123
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Thank you Speedwayaudio and Holy Drink. I will go ahead and install the CPU and HS without any additional thermal paste. I don't intend to overclock right now, and when I do, I may add some more thermal stuff.

Thanks again for your help.

Al
 09/02/2009 10:22 PM
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Moomanerism2
Stanley Hudson

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Wait, hold on there Al!

Thermal buffers (paste, grease, tape) are intended to just take up the microscopic voids between the CPU and heatsink. The thinnest layer possible results in the best interface between your CPU and HS (so long as your CPU and HS are relatively flat and shiney), especially if you're overclocking. Don't add more if you want to overclock, that will just act as a blanket around your CPU and raise temps!!

Also if you ever have to remove your HS from your CPU, let the PC run for 5~10 min in the BIOS with the fan unplugged to warm up the paste so you don't accidentially pull the CPU off with the HS.

Good luck Al! Welcome to the forums!

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 09/03/2009 04:46 AM
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Speedwayaudio
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No do not put more on. If you remove the fan/heatsink for what ever reason clean the old off and re-apply new. I use OCZ freeze. It does not need 200 hours of curing like AS5 does. And to remove the old heatsink don't pull it off.
Give it a twist to break the bond of the old TIM then lift it off. I do not recomend running your cpu with out your fan running.

-------------------------
FX 8150 X 8 4.5MHz
Asus Crosshair V
ATI Radeon HD 6950 X2
8 gb Corsair Dominator GT 9-9-9-24@ 1866mhz DDR3
Seagate 7200.10 HDD LG BluRay HD DVD
w/LightScrib
Crucial M4 128 SSD
55"Vizio LCD
Corsair HX 1000 psu
NZXT Phantom Black
Corsair H80 push/pull
Razer Death Adder VooDoo edition mouse and Keyboard.
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