For my 3 year old living room PC I was looking for a better graphics card than the built-in NVIDIA GeForce 430. The range of low-profile graphics card is not very large because of the "half-height".
The AMD HD 6670 card has, inter alia, a rapid, own memory and works much faster in video editing ... also sees the picture on my 40 inch - Panasonic made significantly better, not only in Bluray ...
Buy recommendation!
Great addition: The Windows 7 - Performance Index shows for both graphic characteristics of each card 7.1
For the GT 430, there were only 4.9 and 6.5
Exciting would be a comparison with the new Nvidia GT 640 Low Profile.
In my online Recherge the selling AMD 6670 but is technically superior ...