On Sat, Feb 04, 2006 at 12:51:46PM -0500, Mark Hahn wrote: > well, FBdimms maintain a high clock, but stretch latency quite a bit as > you add devices. and that's some distance off, I think - rumor has it > that AMD is close to shipping DDR2 support.
FBdimms are great for having a of devices on a single channel and they reduce the pin count which allows more channels, but they're bad for latency. I don't think anyone outside of AMD has any idea when Rev F Opterons will ship -- those are the ones with DDR2 support. However there is a new trick with Rev E Opterons that improves memory performance, if you look at recent SPEC submissions you'll note a large improvement (~ 10%, if I recall correctly). -- greg _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
