Right now I'm running an AMD Barton 2500+ on an Abit NF7-S V2.0 motherboard. I'm trying to upgrade my computer piece by piece. I'm currently running one Western Digital 20Gb 2Mb cache drive, and another 8Gb, 2Mb cache Western Digital drive. I'm on a limited budget and would like to get SATA. Which drives should I get? Is there that much of a performance difference between a regular SATA and the 36.7GB Raptor? Thanks for the opinions.