Tested GOOD GIGABYTE NVidia GeForce GTX 550 Ti 1GB PCIe Video Graphics Card GPU

XFX Radeon HD 6850 GDDR5 Graphics Card

Sapphire AMD Radeon HD 6850 1 GB GDDR5 PCI Express x16 Video Card

AMD Radeon HD 6850 1GB DDR5 Graphics Card DVI HDMI Mini DisplayPort

ATI Radeon HD 5850 1G GDDR5 Graphics Video Card - 2x DVI HDMI DisplayPort

AMD ATI Radeon HD 5870 1GB Premium Graphics Card / Model C078 TESTED WORKING

XFX Radeon HD 5830 1GB GDDR5 Graphics Card GPU PCIe HDMI DisplayPort Dual DVI

1GB RADEON XFX HD6850 GDDR5 Dual DVI/ HDMI/ DP PCI-e Graphics Video Card