First of all, you will need a new processer to change the Socket of the motherboard.
Second, the 2000 is the Hypertransport speed, the big advantage if going with the Socket939 boards is Dual channel ram, and also I don't think the 754's have PCIE compatability.
If you have a 2.2ghz AMD64, you should not be running slow. Look into your software before you investigate new hardware.
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