when resolution up to 1680x1050, in ordinary circumstances, HD5670 and above, 9600GT and above graphics cards still can ensure game run smooth, HD4670 and GT220 can not guarantee smooth. After Opened the 3D visual effects, only HD5750 and above, GTS250 and above graphics cards can guarantee game run smoothly . while other cards can not guarantee .

From performance , HD4830, 9800GT, HD4850, GTS250 performance very close . GT240 failed to beyond 9600GT, although this product has more SP units.it seems that its 128bit memory interface and frequency influence the result . HD5750 and HD5770 performance is good.