hi g0dM@n -
The P4's country-of-origin is one of the things printed right on top of the IHS (Integrated Heat Spreader), which is actually just the top face of the cpu. OEM packaging will always display the IHS so it can be read, and my new LGA775 'boxed' package also has a small plastic window, so you can see the IHS.
The FPO/Batch# will also be on the IHS, and on the side of all P4 retail boxes, along with the Prod code, and a bunch of other info. This info will be printed & also contain scannable bar-codes. You also can find the country-of-origin from the box's FPO/Batch#, by itself, even if you can't see the IHS.
The first four digits of the FPO/Batch# will give you the country-of-origin & date of manufacture (the pack date should also be on the box):
1st digit = country-of origin.
2nd digit = year of manufacture
3rd & 4th digits = week of manufacture (within 2nd digit's year)
My 640, that arrived yesterday, has an FPO Batch# of 3441B408
So:
1st digit = 3 = Costa Rica
2nd digit = 4 = 2004
3rd & 4th digits = 41 = 41st week (of 2004)
(my pack date on the box is 02/15/05 - pretty recent)
I'll see if I bookmarked all the other country codes (1st digits), & post back in a minute. I know "3 = Costa Rica" from memory!
There's also a sticky on this somewhere here in the OCC forums.
Oh yeah, once the cpu's in the machine, I don't know of any way to find country-of-origin or FPO/Batch#'s unless you have the retail box.
Strat