Check out the memory bandwidth comparison between the Asus P4T533 (32bit RDRAM) and the new Granite Bay DCDDR here . People who think DCDDR is the be-all end-all are going to be let down. As an owner of the original DCDDR chipset (nForce), I can attest to this. The fact is, dual channel memory architecture has proven to be difficult to implement effectively. Keep in mind Rambus's whole product line revolves around dual channel memory architecture, and they've been working on it for maybe 4 years now. With RDRAM's falling latencies which are now comparable to DDR, I would definitely go with RDRAM if I had the cash. The Granite Bay board is actually surpassed by single channel DDR in a few benchies on that site, if I remember correctly.