Originally posted by: NSA Lummox
I can confirm how to determine if it's the Falcon motherboard and 65nm core, but there's absolutely no way to tell if it is prior to ordering it.
You can find more info by searching for these numbers, but I've spent a particularly large amount of time gathering this information when I purchased my holiday bundle a month ago.
First, lot number. There is a LOT# token on the side of the box by the UPC and you're going to want lot number 734 or later
Second, the team. There's also a TEAM token on the UPC label, you'll want it to say FDOU.
Third, manufacture date. There's a small perforated tab which I think is on the top of the box. You can safely pull this back and shift the console down a little in the box to view its serial number sticker and manufacture date. You'll want it to be 08/24/2007 or later.
Fourth, the heatsink seems to be an accurate measure as well. You can see this by shining a flashlight through the bottom vent. The heatsink should appear to have flat, broad sides and no visible heatpipe if memory serves me correctly. The original ones had very thin fins on them and featured a very prominent heat pipe.
Fifth, there should be no heatsink visible behind the power button. This was implemented on the Zephyr boards (which came out with the Elite models), however, if you've verified the lot#, team and date this should not be a factor at all.
Hope that helps. If anyone knows if I screwed up on anything please quote/correct me.