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How much thermal paste?

Associate
Joined
21 Mar 2004
Posts
638
Location
Dorset
Just fitted a replacement P4 Socket 478 Northy and it was idling at 70 deg! When I removed it hardly any of the thermal paste had transferred to the fan heatsink. How much thermal paste ( Servisol Silicone) should I apply. I simply smeared it on with my finger but only a thin layer!
 
Just had a close look at my hsf and it got a thin pad stuck to it where it contacts the cpu. Should this be removed? If I do remove it I will need even more thermal paste to fill the gap!! Is that ok??
 
Thanks for all the helpful comments.

I am now wondering if, for some reason, the HSF wasn't seating properly it would be poosible for it not to contact the CPU even though the white retaining clips were in the locked position? All the clips appeared to be in place ok but I cannot think of any other explanation for the HSF, even with a thermal pad, not contacting the CPU.
 
Is it ok to use meths or nail varnish remover to remove thermal paste residue from pcu and hsf? I went to a chemist to get some Isoprophyl Alcohol but you have to buy 500ml! My local pc shop doesn't stock it and suggested simply scraping it off with a credit card.
 
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