Actually, I don't think PC2700 speeds would starve even an A64 too much, and if you have an AXP that runs at 333 FSB anyway then you're fine. However, if you have a more bandwidth-dependent CPU like the P4, you may want to run just the PC3200 (assumes 800 FSB, though there is also the dual channel factor). But then again, if you're not doing anything critical with your machine and only use it for gaming/what not, see if your PC2700 can OC to PC3200 speeds.