why only o/c at some speeds?

[criminalist]

I have an Abit SE6 with a 700 pIII i can o/c it at 875, and 960; however, it will not work at any of the speeds between why?

More info, i am using pc 100 ram but the board says it always uses a 100 mhz bus so i don't think that is my problem. I think this board lets you run your memory at a specified speed seperate from the cpu/core. I would appreciate any input on this.

 

[tigger80]

it should work at 933 with bus speed at 133mhz since you can get up to 960. main reason for some cpu speeds is that is for stability. usually like 100 or 133 bus speed are ideal and sometimes you can go a lot further than 133 depending on the limits of the cpu and ram