Current system specs - - E8400@3.6ghz at stock volts - 4gb ddr2 ( 2x2 ) Running CL4 at 960 mhz. - Abit iX38 QuadGT mobo - 5770 Crossfire - Currently running windows 7 x86. Plan? Have another high performance 4gb kit lying around and 2 spare slots. Want to upgrade to 8gb of RAM and then run x64 windows 7. Maybe do a RAID on the 2x500 gb ( 7200.12 ) hard drives that I have ( mirror ) for faster boot up / performance. No plans to upgrade until 2013 mid / end minimum.