How do I know if I have a Barton or a throughbred?

[Vegeta]

Bought this chip off somewhere 2nd hand, everything is reporting it as a Athlon xp 2600 (running at 1.9ghz), how do I know for sure its not a barton? What programs can I use to find out its l2 cache?

EDIT: Doesnt matter normal athlons @ 2600 run at over 2ghz.

 

[ACESHIGH]

Thouroghbred B run at 2083MHz (166MHz FSB, 12.5 x multi) or 2133Mhz (133MHz FSB, 16 x multi).

Thorton 2080MHz (166MHz FSB, 12.5 x multi)

Barton 1917MHz (166MHz FSB, 11.5 x multi)

 

[Vegeta]

Yep thanks mate seems to be a barton.

 

[ajgoodfellow]

If you want to know for sure CPU-Z is rather good at detecting cores and it's a small free download