Hmmmm, that could explain a lot, but it's nothing to excited about for 415-D beggars. DDR333 won't benefit the Athlon at all. But though, tfor 420-D seekers like me, there is something to be gained because with DDR333 the avialable bandwidth to the GF2MX core will increase from 2.1GBps 3.3GB/ps which will put it ahead of a regular GF2MX400. But in any case, this would explain a lot.