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http://www.10stripe.com/featured/quick/pci-express-2-0.php

this answered my question... lol

The answer is yes.

I have a Radeon x1950xtx GPU that was HOTT in it's day. It's still pretty adequate today, but the price has dropped alot. I was thinking it would be cheap to change MOBO's to one that had 2 PCI-E...