Just an observation from me... I still run PIII 450 and have been looking to upgrade for a year or so now. Sooo much to read and consider. I've been saving and watching. When I do, it's going to be a good one. No budget system here. And the most significant thing (besides the price of the actual CPU) is the type and price of RAM. When you compare the PERFORMANCE of high quality DDR and RAMBUS, it's RAMBUS hands down. Then go PRICE some of that high quality Corsair DDR. The good stuff (DDR) accually cost more than RAMBUS. It's still RAMBUS hands down. Coupled with the stability and overclocking features, minus the $100.00 or so in extra money for the PIIII, for me... it's INTEL.