Good Day I wanna know if an ASUS A8V DELUXE "Socket 939" is compatiable with DDR2 if not what is the highest speed of DDR does it support? Thanks in advance

BTW is it better to have four 256 of RAM or two 512 to make a 1Ghz?

what does the manual say about the compatible memory....did you try the manufacturer's website...google does wonders Abit NF7-s 2500+ @ 3200+ 512 Corsair XMS PC3200 128 meg Radeon 9800 Pro DUAL 36 GIG WD Raptors DUAL 21 in. ( 19.8 viewable ) Sony Trinitrons 3+ Mbps cable connection

I belive that board does not support ddr2 but it does support Dual Channel Memory at 266/333/400 speeds. "BTW is it better to have four 256 of RAM or two 512 to make a 1Ghz?" It would most likley be better to have four 256 but the difference is not worth it, but i recommend using 2 512 sticks and not buying 1gb ones.