i'm a bit confused over the PC1600, 2100, 2700, 3200 DDR. i'm going up with another one, shuttle mobo w/800 fsb, sata, Prob. 2.8 or 3.2 HT P4. So my question is which of the above memory would be best? not into gaming or launching a spaceship. manual for mobo just lists the above, it doesnt make any recommdations. any help would be appreciated!! paul