How good are the AMD XP-2000

I was wondering how good of a CPU the AMD XP-2000's are? How much overclock do poeple usually see with one?

There's a 2000+ Palomino (not much of an overclocker)
There's 2000+ T-Bred A (2.0 GHz.)
T-Bred B (2.3 GHz)
Thorton (2.3 GHz)

All this is with non-retail cooling, and name brand power supply.

Recently made 2000+'s are multiplier locked at 12.5.

I have a week 0323 Thorton 2000+ which has been modded back to a Barton which runs at 2400mhz prime stable on 1.725v on an Asus A7N8X Deluxe Rev 2.0.

If you can get an unlocked Thorton then you really do get a lot for you money. I only paid £37 for this one.

Jonty