almost same price as a 7850.)
performs significantly better (identical to GTX580)
great discount (almost 50% off)
single card solution
SLI might not perform well in some games
Quad SLI is bugged so no quadsli at the moment
huge card, might not even fit
requires a large PSU 2 x 8 pin.
I would never recommend a low end dual gpu setup. With that said, the 7850 comes close and even beats the 580 when overclocked (I believe?), will draw way less power and produce less noise than the 460 2win. 7850 gets my recommendation as well. If you can stretch a little more money the 7950 at around 300$ is also an awesome deal.