taps my 120Hz. For us Older Folk trying not be 'Bambi' with the younger 'twitchers' out there whom seem to head shot a 4 pixel spot as easily as just spitting on their screen, yeah above 60Hz is critical. It helps provide more 'realism' and higher definitional detail that we all can at least DUCK when we see your 4 pixel spot 'move' .
I NEVER seen a time when Crossfire or SLI was worth it EXCEPT if you do multi panel (3 or more) setups. Numerous games don't support or even perform WORSE when Crossfire / SLI is used, and the COST for 2 cards (plus power and cooling two cards) is about the SAME or MORE then just getting the highest end card already available, which performs THE SAME as the Crossfire/SLI.