133 or 266?

[bateman]

can i tell if my cpu is 133 or 266 by its serial number?

[robjustice]

look on the cpu die itself, if it has a "b" it is a 100 fsb or "200" if it has a "C" it is a 133 fsb or "266"
Take a look here (http://forums.overclockers.ws/forums/Public/Uploads/Post-4-12093-core_codes_cropped.jpg)

[bateman]

thanks 4 that much appreciated. the thing is i cant get my cpu 2 run at 133mhz its a 1333c AYHJA on a A7M266 it runs fine at 100mhz but when i bump it up to133mhz it cant cope an locks up!

[oc jason]

bateman (Jul 14, 2001 11:07 a.m.):
thanks 4 that much appreciated. the thing is i cant get my cpu 2 run at 133mhz its a 1333c AYHJA on a A7M266 it runs fine at 100mhz but when i bump it up to133mhz it cant cope an locks up!

because its default setting is like 13.3x100=1333, if you keep the same multiplier and up the FSB to 133-is never gonna boot- thats 13.3x133=1769mhz, that is just too much for that chip.
Set the settings to 10x133=1330, (you have to drop the multiplier to get a higher FSB) then slowly up the FSB, you should get to1450-1500 with air cooling and probably more. id try around 10x145/150 to get 1450-1500mhz. The not lowering your multiplier is your problem

[bateman]

I havent even tryed 2 overclock it yet m8! i cant even get it 2 run at 133x10 it only runs at 100x10 it locks up at 133x10? could it be faulty?

[oc jason]

so it will run at 10x100 butr not at 10x133, that is strange -my first guess was a locked chip? but you can change the multiplier so thats not it. hmmm, it could be that one of your other components dont like a running at that bus speed, do you have any setting between that like what mhz increments are there-try like 11x115 or something