I bought a new laptop a while ago, it's the Asus A75de.
64bit, amd A8-4500m, 4gb RAM, AMD Radeon HD 7640g + 7670M Dual graphics.
Settings have been automatically set to high, but I can play on low at about 30-40 fps indoors.
Just tested and it has 15-20 fps outdoors on high without AA and AF.