I tried to fine gaming benchmarks of the card, but I could not really find any. The most I got was that it will game, but slightly less than its Geforce counterpart. I think the 4600 would be at or below a 8800GT, so unless you do CAD work, it wouldn't really be worth it for gaming imo. I don't think it would add much performance, and it might actually cause more problems/glitches too since the drivers are meant for workstation apps. Do you only plan to use the computer for gaming, or do you do CAD work as well? It won't hurt anything though, so if you want to try it that's fine. It would be nice to know how it performs. I know gaming cards are very poor at CAD apps, but I have seen very little of CAD cards at gaming apps.