The power consumption claims in this thread are ridiculous..
The GTX 280 doesn't consume a lot more than the HD4870 and in idle it actually consumes a lot less than HD4850.
This card uses the new chips at 55nm wich should consume less than their predecessors.
So there's actually a big chance that this card will consume less than the HD4870X2 in load, and in idle it will consume less, 100% sure.


These are neither GTX260 or GTX280. This is a GT200b with 240sp and 448bit bus.
I guess they cut on the bandwidth to save PCB space, both in the ammount of circuitry connections required and in the ammount of RAM used. Probably there's no difference in performance between this card and two GTX280 SLI'd.