i'll post as i have recent experience with ASUS sandy bridge and its finicky RAM approvals. i bought two kits that should have worked according to Kingston's site but the 8gb versions (16gb total) weren't on ASUS' QVL. according to the ASUS forums there are multiple problems around RAM not listed on the .pdf linked below. if you have any intentions of OC'ing that CPU (and with the mobo selection i'd assume that's a yes) do yourself a favor and get a flavor of RAM specifically listed.
also, at this time, try and stay away from 4 sticks. i'd definitely suggest 8gb (2x4gb). you can find a great selection at around $100.
and lastly, there are also a lot of headaches with RAM speeds past 1600mhz settings - so, i'd not worry about DDR2000.http://support.asus.com/QVL.aspx?SLangu ... DJrYucOm0n