
The GeForce GTX 690 is the most powerful graphics card ever made. A combination of two graphics processing units, it runs four gigabytes of video memory at six gigahertz, while using one third less power than two separate cards. Since high temperatures are problematic for dual graphic card performance, engineers added a fan, two vapor chambers, and an aluminum frame to help dissipate heat. As a result, it can run four 3-D monitors at once, no sweat. $999