God I hate the Corsair XMS2 Twin2x2048-6400C4 ram, first they're not Micron D9 ICs, even though the first 2 versions of the same model were, the newer ones use PROMOS ICs. They're not worth the asking price, plus the price went from $306 with $40 instant savings a month ago, then rapidly dropped in price, all the way down to $260 w/o any sort of instant savings or rebates... just yesterday they were $300 with $40 mail-in rebate, now they're $328 with $20 instant savings and $40 mail-in rebate?? Just choose a different brand of memory, like G.Skill, get the 2gbhz DDR2 kit.
ASUS P5N32-E SLI Socket T (LGA 775) NVIDIA nForce 680i SLI ATX Intel Motherboard - Retail $299.99
Intel Core 2 Duo E6600 Conroe 2.4GHz LGA 775 Processor Model BX80557E6600 - Retail $312.99
G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400PHU2-2GBHZ - Retail $299.99
XFX PVT80FSHF9 GeForce 8800GTX 768MB GDDR3 PCI Express x16 HDCP Video Card - Retail $649.99
EVGA NF680i Motherboard SLI S775 ATX for Intel C2E C2Q C2D 122-CK-NF68 $249.99
Total with the EVGA motherboard instead of the Asus is $1512.96