Sorry to go off target there indy, looks like we got into a global temperature chart
I've never clocked my XP 'cos it's a 2100 palomino, and as has already been mentioned is not worth the effort for the gain.
I read somewhere that you can get an XP1700+ chip to run @ over 2GHz (real clockspeed not AMD's reference speeds) stabley without too much work. I guess really though it depends on a lot of factors i.e. BIOS capabilities, CPU core revision, stepping number, memory/system FSB, Cooling etc. etc.
I've never tried it personally but I have a friend that did it the old
fashioned way using a pencil to bridge L1, and he got really good
results, and he still uses the chip some 3 years later.
Nowadays AMD are wise to that and have removed some of the organic material to create pits between the points that could previously be joined with a graphite pencil.
Several methods are now available to circumnavigate this issue so I guess it's case of choosing a method and going for it. Given that you have a XP2100+ Palo too, is it really worth it?
Chips/Mobo's are coming down in price all the time. Maybe stick with what you got for a while longer, save them pennies, and upgrade when you can. Research the chip you wanna buy. Several different cores produce varied results dependant on voltage use etc.
Hope it works out for ya....Good Luck