Hi Guys

There's been a little talk now that at high FSB 680i chipset takes a beating from 975 much like 965 boards do past 400MHz FSB particularly Asus P5B Deluxe unless you boot <400FSB and clockgen up

Denny confirmed yesterday that there is a performance penalty past 424MHz FSB and i'd like others to join in and do some testing and determine whether all boards are the same

when you join the thread please run memtest 1.65 and do 5MHz FSB jumps from say 380MHz FSB and look at the RAM bandwidth. Once you see the bandwidth drop after increasing FSB determine at which FSB EXACTLY that happens and post some 32M SuperPI times

****MAKE SURE YOU MANUALLY SET RAM TIMINGS

once you've done that jump to this thread
http://www.xtremesystems.org/forums/...d.php?t=125418
and download latest beta clockgen for these boards and then boot at fast FSB and clockgen up to see whether the "strap" stays the same (i'm calling it strap as i don't know what nvidia would call that heh).

Also test what the highest benchable FSB in fast mode is comapared to looser/slower mode

here is Dennys finding

Quote Originally Posted by guess2098

here is the proof that 1699 & 1700 FSB break line

1699FSB (424.7) fast 32M






1700FSB (425) slow 32M






anything above 1700+ are kinda useless now

i'll be joining in when my 680i arrives....any day now