OCZ OCZ2RPR10664GK 4gb kit (2gb x 2) pc2-8500 1066mhz 5-5-5-18 240-pin ddr2 dimm w/reaper hpc heatsink ($30 Mail-In Manufacturer Rebate Available from 12/1/08 till 12/16/08)
CRUCIAL 2gb CT25664AA800 pc2-6400 800mhz cl6 240-pin ddr2 dimm
PATRIOT PDC32G1600LLK 2gb kit (1gb x 2) 1600mhz 7-7-7-18 240-pin ddr3 dimm w/heat spreader
CORSAIR TW3X4G1333C9DHX 4gb kit (2gb x 2) 1333mhz matched pair 9-9-9-24 240-pin ddr3 dimm ($30 Mail-In Manufacturer Rebate Available from 12/1/08 till 12/15/08)