CrazeD wrote:
Scorpion0x17 wrote:
CrazeD wrote:
You guys must not know how much pressure and how tightly the heatsink seals itself to the CPU. You do not need to thin it out, and if you do you could get bare spots or very thin spots which could cause temperature rises in that spot (though you probably won't see a difference on temperature measurements) damaging the CPU.
The correct way to do it is to put a small blob in the center of the CPU, about the size of a BB or small uncooked grain of white rice. Then, just secure your heatsink and twist it a tiny bit both ways (to make sure there are no air bubbles).
If you remove your heatsink after doing this you will notice it is perfectly spread out, in an even layer.
The part of the CPU that makes heat is the core...which is in the middle of the chip. Spreading the paste out to the edges is just wasting the grease, wasting time, and making a mess.
Interesting, as I said earlier, the received wisdom back when I AS'd my AthlonXP, from both AMD and AS, was to do the 'small-blob-and-then-spread' method.
Does the heatsink assembly on modern CPU sockets provide more even pressure than the older setup, I wonder?
I've seen the fancy new intel assemblies - and that would appear to give more even pressue, but I've not seen AMDs...
Why would it not give even pressure?
I'm not sure what kind of cooler your AthlonXP had. The AMD64 coolers clamp on pretty tightly.
When using my method (just a small blob then put the HSF on) after I take it back off there is a circle of it about the size of a bottle cap (in diameter).
The thing is, if you spread it out first and THEN clamp the HSF on, it's going to keep squeezing it as it goes down. So you could get some of it to ooze down around the CPU, but you might also get very thin spots where you get temperature spikes.
Maybe the method is different for AthlonXP, but even on the AS5 website it says to put a small blob and then put the HSF on.
Well, the AthlonXP uses Socket-A, whereas the AM2 uses, unsurprisingly, Socket-AM2.
As I've said, I've not seen the Socket-AM2 socket and heatsink fixture design, so I'm not certain, but with the Socket-A, the heatsink clipped onto lugs on the side of the socket, thus, making it easy to have it not pressing evenly across the CPU die.
But, I'm guessing it's just one of those things where the advice has varied over time.
Last edited by Scorpion0x17 (2007-07-29 14:15:47)