This version has 2GB of DDR3 memory type which results in a solid fast-middle-class GPU capable of playing Very Demanding games like Metro 2033 and The Witcher II at medium settings smoothly. Modern demanding games like Crysis 2 and Skyrim V will run at high settings with fluent FPS. Its biggest hindrance is still the limited memory bandwidth, meaning it won't take advantage of the 2GB of video memory and so AA and other techniques might have to be disabled to achieve fluent FPS. (game-debate.com)
pros and cons from HD 6670
Pros:
+ Cheap.
+ Can handle modern games with medium and high setting.
+ Works great even with a 300 watt psu
Cons:
- Can't handle games with ultra setting
If you are looking for a low power consumption graphics card, then radeon 6670 is the right choice for you.