The Acer Aspire V3-571G is a good laptop. I am able to play Battlefield 3 on it at high / ultra settings with some eye candies turned off e.g AA pretty smoothly at its native resolution of 1366x768. It does run hot though when gaming due to it having an Ivy Bridge processor, which can run pretty hot.
NVIDIA GeForce GT 640M VS AMD Radeon HD 7730M