Okay, looked at the specs.
If you go to "support" on that page you linked, and click "Memory/Device" support, it does list a bunch of video cards, but not brands I'm mostly familiar with.
Geek Speak » in reply to Can you list ALL the slots on the motherboard?
If you go to "support" on that page you linked, and click "Memory/Device" support, it does list a bunch of video cards, but not brands I'm mostly familiar with.