Does a Dell Optiplex GX270 motherboard support PCI-E/PCI-E 2.0?

I am browsing for a new GPU and I don’t know whether or not my motherboard supports PCI-E or PCI-E 2.0. The particular GPU i have my eye on can be found: http://ping.fm/ysakp I would prefer a YES or NO answer for both PCI-E and PCI-E 2.0. And I would even more appreciate a recommendation [...] http://bit.ly/mPjd0Q