Originally Posted by
cptwhite_uk
Josh, you should read the anandtech article, but to summerise 460 1Gb SLI vs 480 single card:
460 SLI wins 6/8 benchmarks in games at 2560x1600 max settings, often with a margin of 20% over the 480, in the 2 it looses it's about 2/3fps behind.
Dependant on the cooler of course, but the ref design (in SLI) is quieter at idle and load than the 480
At idle 460 1Gb SLI uses 17W less than 480
At load is uses more (between 13W more in Crysis, to 49W more in furmark)
On average typical useage I'd suggest the 460 in SLI uses slightly less W, depending on useage patterns...and your comments about scaling aren't really relevant these days, especially with Fermi.
...and 460 1Gb SLI is currently cheaper to boot!