CORSAIR TWIN2X2048-6400C4 2gb kit (1gb x 2) pc26400 800mhz matched pair 4-4-4-12 240-pin ddr2 dimm ($30 Mail-In Manufacturer Rebate Available from 11/16/08 till 11/30/08)
KINGSTON hyper x KHX6400D2K2/2G 2gb kit (1gb x 2) match pair pc26400 800mhz cl5 5-5-5-15 240-pin ddr2 dimm w/heat spreader
CORSAIR value select VS512MB667D2 512mb pc25300 667mhz cl5 240-pin ddr2 dimm
PATRIOT PVS32G1600LLK 2gb kit (1gb x 2) 1600mhz 7-7-7-18 240-pin ddr3 dimm w/heat spreader ($15 Mail-In Manufacturer Rebate Available From 11/01/08 Till 11/30/08)