And now for a contrary vote, with some conditions.
1 Must be to A64 3200+
2 You must have someone to sell your old mobo, ram and chip to.
3 You must already have a 9800pro or better video card.
4 Your current mobo can not support 800 fsb.
If your mobo supports 800 fsb, get a 2.8c and overclock it.
If you have a slower video card, check out the BBA 9800pro at <A HREF="http://shop.ati.com/tradeup.asp" target="_new">http://shop.ati.com/tradeup.asp</A>
If you sell your present setup, you should be able to recover half the cost of the upgrade. That makes it a good deal.
Your chip uses a 133/533 fsb setup. On that fsb, you would need a 3.6 chip to match the a64. That says you are looking at an upgrade equivalent of 1.1 gigs, 11/25ths, or 44%. Seems okay to me.