I know everyone is talking about lapping the heatsink, but with the p4 and the a64, the die is encased in aluminum... and that aluminum is not smooth, has anyone tried lapping that along with the heatsink?
A lot of people have done that. Some have even removed the heat spreader in hopes of getting better contact. The procedure for lapping the heatspreader should be exactly like the heatsink process. I'd be a lot more carefull to not get metal bits everywhere though, use common sense in where water and shavings are going.
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