Where can I see ES version of Athlon 64 *2?

[mailrapid]

As everyone knows, each product's process maybe contain engineering sample.
For example, there is word "ES" printed onto Intel's CPU.

How about our AMD's?
Where can we see this information?

 

[Kaotik]

As everyone knows, each product's process maybe contain engineering sample.
For example, there is word "ES" printed onto Intel's CPU.

How about our AMD's?
Where can we see this information?

Actually, Intel prints "Intel Confidential" on their engineering sample stuff, not "ES"
edit:
Looks like "ES" is there too:

(That's a Core2Extreme QX9650 engineering sample)

edit2:
This is how AMD marked at least some of the K8 engineering samples: