The wild and
heatsink-crazy team at FrostyTech have published a review of the nice looking Alpha Novatech PAL8150 AMD Athlon64 heatsink today. Here's a clip to get you started:
"The Alpha PAL-8150 heatsink is built to cool recent single
and dual core AMD Athlon64/FX/X2 & AMD Opteron processors, and so it's
compatible with all socket 939/940/754 CPUs. It should be noted given the
imminent arrival of AMD's Socket AM2 Athlon64 CPU, that this heatsink won't be
compatible with the four screw hole arrangement that socket is expected to introduce (see here and here). "