OK, I installed in my rig last night. All I can say is WOW
Contrary to what it said on the card sticker, the BIOS version is 70.00.1A.00.02... but the card rocks!
I can't understand the bad press these cards have received. Mine is no louder than my older GTX 280, and the idle temps are actually better: 45 to 47 for the 480 vs. 50-52 for the GTX 280.
I tested it in furmark / msi kombustor: temps went to 92-94 C, then dropped to 90-91 with fan on Auto (80%).
In games, temps range from mid 70s to mid 80s, again with fan on Auto (fan didn't rise over 65%).
I tested the card with no A/C, so the room temp was around 26 to 28 degrees Celsius.