Thru client upgrades I've just inherited two X2 systems: one an old S939 4400+ which will overclock slightly on an ASUS A8N32-SLI mobo and a newer AM2 7750 on an ASUS M2AVM with a failed RAID chipset but I think the IDE is still good for one old HDD. smp or standard CPU client? the SLI rig might be good for GPU instead, need to find more GPU's and then need beefier PSU as I was just planning on using some cheapo 400-450 watters...