I am looking into getting two cheap AMD cards for two of my brothers to use with the R600g driver and the one with the most compelling specs seems to be the MSI R6450:

Still, I have heard some bad things about the 6450, so I wanted to ask if anyone has some experience with the card. Nothing to intensive will be done with them - if it can play games like Trine, Prey, and Amnesia acceptably like my Diamond Radeon HD 4670 (which I am very happy with) can it will do just fine.