I am looking at getting the ASRock Penryn1600 board(had a 939 based ASRock board before and loved it), and a E8400. I am wondering though, what would be better for overclocking. Getting 2gigs of 1066mhz DDR2(and later upgrading to 4gigs 1066) or 4gigs of 800mhz DDR2. I plan on using vista...