I have an Early 2008 Mac Pro (3,1) and there is an ATI 5770 card in PCIe slot 4. I just purchased a Crucial 512GB SSD and thought I could get away with a fudging it into a regular drive bay. Thats not working out because the plastic adapter doesnt appear to be aligning the physical interface properly. Instead, I'm looking at PCIe cards for the SSD. Because the graphics card is so thick I dont think Ill be able to use slot 3, the only other 16-Lane (2.0) PCIe slot. So, can I put a SSD drive card (like the Velocity) in slot 2 (a 1.0 PCIe slot)? If I do, will I see a performance hit? Alternatively, can I move the graphics card to slot 2 and put the Velocity card in slot 4? Thanks for any advice you can provide.