yes, i had similar problems with this board at and above 520 FSB with all of the bioses running Super PI 32M...it must be something to do with us being at the very edge of memory specs and trying to find the right memory settings to make the chipset and cpu compatible with running super pi...all my video benches were completed but i couldn't run 32M bench get that one
I think at the minute it's the CPU as I showed in the link , can do it with the E8400 not with the E8500 which is a little odd as the E8500 is binned higher. Maybe my 8400 is a good one that got away