I'm working on a new P4 system. It'll be probably a 2.5 or 2.66, overclocked to hopefully a tad over 3. It's going to be used mostly for graphics rendering and video editing. Would I see much of an improvement using RDRAM over DDR? I'll probably have only 256MB either way to start off with, on an Epox board if DDR or an ASUS if I use RDRAM.