AMD XP2100+ FSB/Multiplier?

Ok, from what I have gathered spending about 45 minutes looking at old posts the XP processors all have 133mHz FSB but different multiplier settings? (Am I right/wrong??? I dunno....) So that would mean that my 2100 has a 13x multiplier with a 133 FSB, right? Why do the processors advertize as 266 FSB? I'm still rather new to all this so go easy on me...

The Athlon 2100+ runs at 133X13=1733MHz.
The reason you see 266 is because 133MHz is DDR (double data rate) so the speed is 133 but the "result" is 266.

Yes, they're all 133 FSB. And yes, the 2100 is 13x. It's .5x per processor, i.e. the 1600 is 10.5x133, the 1700 is 11x133, 1800 11.5x133, etc...

The reason they advertise 266 is because of DDR memory. DoubleDataRate to be exact. It transmits data on both the up and down of cycle, whereas SDRAM only transmits once per cycle. If it's running at 133 MHz it has an effective data rate of 266 MHz since it's doing double duty, hence the 266 FSB you see advertised.

--Illah

Ok, that's what I was thinkng, but thanks for clearing evreything up!