Okay so i was running my email@example.comGhz 833Mhz ram at a 2.5 div when i rebooted to look for a graphics aperture settings it doesn't boot back up. so bios gets reset, i put the exact same clocks back in and it still wont boot? so unplug the power and leave it be for about 3 hrs. boot, and finally runs...at 1.5Ghz, no matter what settings i change it does not listen to me. It has it displayed correctly in the bios and does not default, it just doesn't change. Im completely stumped because i had it running for 3 days perfectly stable at those clocks.
His ATI Radeon x1950Pro
G.Skill PC-2 6400 1024x2
Antec 400 watt SmartPower
P.S I can change the timings on my ram perfectly fine, its just the FSB/Memory bus I think.
More about :p35 ds3l saving bios settings underclocking
I have been having a similar problem. I am running this motherboard with a pentium 640 3.2 Ghz processor and it won't let me change the FSB settings. I change it and then save the bios and it reboots back to 3.2 Ghz. I am only trying 1 MHZ increase of the FSB to 201 so I am not sure what is wrong...