I dont think that anyone in this thread has suggested going out and buying a new machine with an XP in it. I personally think that a new build would have to include a A64 or it's Intel equivelant *gasp* The cooler Rob reviewed will work nicely for anyone with an Athlon XP system that they are trying to extend the life of. Not that this cooler will technically extend the life of the CPU but it will certainly cool better than a stock cooling solution.
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