I gave ya bad information. The GPU's are R9 270x's, my bad I didn't have the box in front of me before. I followed the instructions in the video to the letter and am unable to pull up amd catalyst control center. I have uninstalled the program AMD install manager, disconnected the second GPU, reinstalled the install manager, reconnected the second GPU, checked to make sure all the parts are recognized...Hooked up the Crossfirex cable and nothing. I went back to AMD, used their auto-detect program to make sure I have the latest drivers and software, which it confirmed. I am unable to bring up the Catalyst Control Center to enable Crossfire...Did I miss something?