im debating between buying a ATHLON 64 FX or a Athlon 64 X2 - 5000, and im not sure which ram to get. i want the CORSAIR XMS2 DDR2 2GB (2x1GB) TWIN2X2048 - 6400C4PRO but im not sure to get the CAS 4 4-4-4-12 2.0V model or the CAS 5 5-5-5-15 1.9V model (will be upgrading to 4 GB when Vista comes out). if u think a different company would be better then please list. all help will be very helpful because i dont know anythin bout ram.