That's the $64,000 question (man am I showing my age). I850E boards with PC 1066 RDRAM are still the performance champs. Even on the aging I850E chipset. Newer DDR boards are just about even when OC'd. Intel has decided the future is DDR so most people feel you're taking a chance buying RDRAM boards. But Rambus may not be dead yet. Read <A HREF="http://www.theinquirer.org/?article=7361" target="_new">this</A> and <A HREF="http://www.theinquirer.org/?article=7944" target="_new">this</A>.Is the 845E better than the 850E chipset? I have been looking at them and I've heard different things.