6. The case is big. That's part of the reason that I got it, but it's so big and the distance from top to bottom is so great that if you try and run 2 video cards in an SLI config, the PCI-E cord will not be long enough to reach the second one.
That depends on your power supply. The one on my antec is like 14" the one on my new power supply im getting soon is 21". The legnth varies from power supply to power supply