you definatly DO Not want the XP 2000 Tb.
I have had about 6 CPU's in the last month to test and the Xp 2000 Thoroughbred was the worst XP CPU I came across ever.
I have never seen a XPU run as hot as that one did.
it ran 66C, on both an NF2 and Kt-333 board, that were both completly different setups, and was cooled with a volcano 9 going at full speed.
I simply could not believe how ineffective a Volcano 9 was at cooling that CPU.
the best CPU I seen recently, is the XP 2100, and by far the XP 2500 cause it ran at 84F with a volcano 9 at half speed, and even with 1.85 volts going through it, I could not budge it past 100F.
that CPU just runs cool as Ice.
the XP 2100 Overclocks like mad, and runs fairly cool.