The mainstream graphics market is where buyers usually go to get the best value for their gaming buck, as this is where you will find the top combination of features, performance and price. This is what really drives mainstream graphics, and these cards can pump out the needed framerates, all without putting too big a dent in your wallet. Another interesting facet of the performance mainstream is the emergence of specialized designs and cooling formats, which is due to the lower heat and power requirements of models like the Radeon X1600 XT and GeForce 7600 GT.



Link: SharkyExtreme