Radeon 7790 on PCI-E 2.0

Hi ppl, I'm interested in 3d performance of 7790 on motherboard with pci-express 2.0.
Is it going to work or it wont work primary I'm asking cuz of movies so im wondering are 3d hd movies gonna be good or not?
 
It will be fine, you should not have any problems, there is really no difference for that card PCI-E 3.0 to 2.0 specs.
 
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