Ever look at reviews of a 6100. Its no better then a geforce 6600 clames on reviews by biostar. They are right. I can run Doom 3 on high but with low res. Doesn't bother me. I can play the best games on freakin onboard video. Ha! You'll need a 6800 or a 7800 to make a big diff in this onboard video. There is very little diff between the 6100 and the 6150. They are very good. Clock speeds run from 425 to 475mhz. A 6200 isn't even as good. Besides haveing 4 pipelines and support for 256mb's memory. The 6100 and 6150 gpu is better. Look it up yourself. Its quite good.