Palomino: XP 1500+ - 2100+
Thoroughbred 'A': XP 1700+ - 2200+
Thoroughbred 'B': XP 1700+ - 2800+
How can u tell ?? Well first off in a retial package its easy to tell as when u flip the package to the backside u can clearly see the CPU.....now if it looks like a Square and there is writting imprinted onto the actual DIE of the CPU itself than its a Palomino......... (This ALSO Applies to OEM CPU's)
If it looks more rectangular than it is a Thoroughbred....how to tell if its an A or B ?? well ull notice there will be a sticker on the opposite side of where the AMD Logo apears on the CPU....that Sticker will read something liek the following...
AMD Athlon XP
AXDA1700xxxx (x is just a filler it will have #'s or letters there)
AIUG<b>A</b> That is the STEPPING of the CPU...in this case its a Thoroughbred 'A' notice the letter A at the end of the 5 digits ??? Thats the stepping of my T-Bred 1800+......
A Thoroughbred 'B' CPU will show something like this...
AMD Athlon XO
JIUH<b>B</b> Notice the letter B at the end of the 5 digits ??? that indicates its a Thoroughbred 'B' type.....eventually all AXP's NON-BARTON will be Thoroughbred B's as AMD No longer makes T-Bred A's or palomino's......essentially all T-Bred B's r downclocked 2800+'s......thats why they overclock so well....
Go <A HREF="http://www.overclockers.com/tips00173/" target="_new">here</A> to see how to tell which it is by looking at the manufacturers code they give on the retailers' websites.This way you can tell before you buy it.
no matter how hard you try, you can't polish a turd. :]