How do you know this about the chips from Googlegear? If its true that is good info.
im not 100% sure about this, im going off of friends and ppl from other forums who have ordered that proc and recieved a tbredA
How are you getting the T-bred As to OC to 2.1Ghz? I can't push mine above 1.796Ghz (for some reason it can't stnad 1.8Ghz...maybe its my PSU problem...its a 350watt Q-Max that came with the casE or maybe I got a so-so batch) and the highest I've seen on the boards was a 1.91Ghz oc for a 1700+ T-bred A
tbred As dont overclock nearly as well as bs. your ~1.8 seems about average, but if could be limited by other factors such as your motherboard, ram, and possible that psu depending on your other components.
here is a great site explaining athlon processors [l]http://lowyat.isentral.com/guides/athlonxp/[/l] there is a section on the new 1700+ at the bottom too.
you can also check out some of the max o/c of tbreds here [l]http://www.vr-zone.com/guides/AMD/TBred/[/l] most users also post their setup