Sapphire Radeon HD 4670 GDDR4 & HD 4830
 

Gaming on a budget isn't as difficult as it once was, thanks to superb offerings from both ATI and NVIDIA that go for a modest price. But, what about the sub-$100 crowd? We'll find that out here, at least from the ATI side of things, with Sapphire's HD 4670 GDDR4 and HD 4830. Both feature great efficiency, and believe it or not, great overclocking as well.

http://techgage.com/article/sapphire...gddr4_hd_4830/