Has anyone had experience with the Athlon 64 yet? I'm looking at the moment to be building 3 systems based around the Athlon 64 3000+, 1Gb RAM, and a nice new mobo. Does anyone have suggestions re motherboards, I'm currently swaying toward an Nvidia Nforce 3 chipset based one. Also suggestion for quiet/ish hetasink and fan combos. Cheers in advance.