How can I tell if my 1.4 Athlon is 200 or 266 fsb?

[sleefer]

I've got a 1.4 Thunderbird with AYHJA on it. Is there some way to tell by the numbers on it?

 

[AndyHui]

Look at the end of the first line of markings.

If it ends in a B, it is 200MHz FSB.

If it ends in a C, it is 266MHz FSB.

 

[sleefer]

A1400AMS3C so that means 266 fsb. So that would be 10.5 x multiplier?

 

[johndoe52]

That's correct. Shouldn't your mb auto detect where it belongs when you boot up anyways?