Alright, back to my first question. Which is better a GT 545 or a Radeon HD 6670? also how big of a difference is there?
AMD has dominating the "best gpu for under 75W TDP" for over two years now. Started with the 5670, than the 6670 took over, and now its 7750.
6670 is better than the any other gpu than does not require a separate pci-e connector, besides of course the new 7750
I also think that the 6670 is about high as you can go with your cpu w/o running into cpu bottlenecks.