AMD's Athlon heart attack: Super Bypass
Tom's Hardware Guide has published a very interesting article
about AMD's plans for the next revision of the 750 Athlon support chipset. The 751 "north bridge" chip is capable of significantly reducing memory latencies (up to 25%) when certain conditions are met. THG's tests show performance increases from 3-15% in a gamut of tests, with an average increase of around 5% or so.
It seems newer revisions of the Athlon chipset are shipping with this feature, but finding out whether or not your chip is a newer revision isn't easy. If you've got it, turning on "Super Bypass" may be as simple as changing a BIOS setting. We'll keep you posted as we learn more.