Sapphire HD 4850 512 MB 100245L Own PCB Design
 

Sapphire has engineered their own version of the Radeon HD 4850 with cost and cooling in mind. The card's new unconventional heatsink looks good and keeps the card cool - far below reference design temperatures. The best of all is that the card costs only $169.99 online which makes it the cheapest HD 4850 available today.

http://www.techpowerup.com/reviews/Sapphire/HD_4850

Not the cheapest, but one of the cheapest;)

http://www.tigerdirect.com/applicati...gtCjCVRqCjCVRq