RDRAM or DDR SDRAM memory. that is the question you need to answer. I do recommend not using SDR SDRAM. RDRAM is currently the highest performing RAM, but can be quite expensive. A specific motherboard recommendation is mult-faceted and requires many factors to consider. Cruise the boards (check out what others are using), make a list of candidates that fulfill your requirements, read the reviews, then look them up on Price Watch. BTW. before making your processor choice, be advised that the 1.6A may not reach the level of overclock you mentioned. It's a gamble with no guarantees. You may get there, but with a stability or reliability compromise. If you do valuable work on it, use a faster non-overclocked processor. If it's an enthusiat's rig and crashes, corrupted data or possible hardware failures won't hurt you, then go with the overclock. I have a 1.6A @ 133MHz FSB=2.13GHz without problems. I had it up to 155MHz FSB=2.48GHz, but I ran into problems with heat and stability. The (air)cooling requirements to run 155MHz FSB were too noisy for me. It's happy and quiet running 133MHz FSB. I also have a 2.2GHz P4 stocker for work. Oh I forgot. I have a Gigabyte GA8-SRX w/512MB PC2700 DDR SDRAM and an ASUS P4T w/512MB PC800 RDRAM(this is my work rig).