Whats the difference between these 2 AMD Processors?

[Wipeout1944]

AMD ATHLON THUNDERBIRD 1.4GHz 266MHz FSB SOCKET A PGA PROCESSOR-OEM Version Stepping AYHJA
/

AMD ATHLON THUNDERBIRD 1.4GHz 266MHz FSB Socket A PGA PROCESSOR-OEM Version

 

[Creig]

The AYHJA is like a batch number. Some batches are more desirable than others for overclocking purposes. I believe the AYHJA is one of the best ones, but there are gurus around here that could tell you more.

 

[meson2000]

Basically, AYHJA is one of the better overclocking revisions. You sometimes
have to pay more for this particular stepping. That is probably why the
site listed them seperately. If you don't plan
on overclocking, there isn't any difference between the two. However,
if you plan to overclock, then probably go with the AYHJA. You will probably
have greater success. My 2cents

 

[Wind]

There r the same...just tht AHYJA seems to O/C better.