Hello guys, I've a problem with my two PC, the first, a Duron 850 on a Gigabyte GA-7ZX won't run dimm at 133Mhz (they are 133), and the CPU doesn't like bus speed over 115mhz. The second a Celeron 366 doesn't want to run at 550mhz even if I use a Duron Cooler and I've lapped it. It runs on a P3B-F with a little bigger cooler rather than on a P2B-F, any ideas?