Sapphire Radeon HD 4850 X2 review
 

Sapphire Radeon HD 4850 X2 review which also features the Gainward Radeon HD 4870. The Sapphire Radeon HD 4850 X2 has 18% lower clock speed, 45% lower memory speed and is 18% more expensive than the Gainward Radeon HD 4870. The Sapphire Radeon HD 4850 X2 is the little brother of the more expensive and powerful ATI Radeon HD 4870 X2.

http://www.ultimatehardware.net/ati/...hd_4850_x2.htm