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Appplying IC7 to an exposed APU die

K

KingUniverse

Junior Member
So I got my tube of IC7, applied it using a dot in the center, had higher temps than stock. Tore my laptop apart, cleaned it up (yes, it definitely scratched the mirror finish all to hell) and reapplied using the double grain of rice method (It's a rectangle die, 1.5CM by 1CM) and STILL had higher temps than stock. I then tore everything down AGAIN, and applied using the single grain of rice method, and still have higher temps than with the factory TIM. My question is, before I scratch my APU anymore, what would be the best way to apply this, without applying too much? and what would be a good amount for a die that size? The single grain may have been a bit much, and yes, I've searched the internet and forums for the answer, they all have heat spreaders. I've even looked at the IC website, and saw the double grain method mentioned for exposed dies. I would just like opinions on the best way to apply the right amount, again, I think I'm applying too much. Thanks for your help in advance.
 
I'm also past the 2 hour cure time, I prime95'd it for 2 hours, left it on overnight with no load (about 5 hours) and had two 30 minute power off cool down periods in between .. ...
 
Don't think in terms of how much to use for a given die size. Thermal compound is intended to fill microscopic gaps between the surface of the heatsink and the chip so you want to apply the thinnest possible coat to the mating surfaces of the CPU and the HS/F. Anything more will impede thermal conconduction, not improve it.

I usually put a small BB size drop on the mating surface of the chip and use my finger to spread it evenly.

For non-adhesive compounds, Windex removes excess material from the machine... and fingers, too. 🙂
 
The other problem with direct to die mounting is that contact pressure is going to make a big difference in temperatures. Your current mounting method may be too loose. But if you tighten it too hard you can crack the die, as I'm sure you know. Try tightening it a little bit and see if your temperatures improve
 
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