Hypothetically, what is the limiting factor if I try to run an XP2000+ at 333 FSB instead of the 266 FSB it is designed for (assuming I had a mobo that supported it)? I do not mean the memory bus, I mean the FSB of the CPU itself. I ask this because my old processor, a 1GHz T-bird was actually a 200 FSB processor (100 x 10 multiplier), but I simply upped the bus to 266 which made it a 1.33GHz (133 x 10 multiplier). It has been running fine like this for over a year and runs at about 40-41 deg C idle on a stock HSF (actually its using the HSF from the XP2000+). I know the mobo in my sig doesn't support those CPU's (yet), but possibly a future BIOS update may fix that. If a BIOS update does become available someday to support a CPU FSB of 333, that would be nice so the mem can run syncronous with the CPU. I figure the XP2000+ is so cheap these days, it's almost worth a try Technically, going from 200 to 266 is a bigger o/c than going from 266 to 333 (percentage-wise).