Racedriver: GRID

GRID does very well on the 5670, easily beating out the GT240 and maintaining an average over 60 fps at 4xMSAA.

Assassin's Creed

Again, the HIS 5670 comes out on top here, but it is pretty close when you don't look at the numbers and actually play the game. Still, the HIS 5670 allows you to play with medium to high settings (all settings in game dropped by one) at 1680x1050.