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z77 and x79 motherboard gpu explanation.

#11Mr kittyPosted 8/19/2013 1:23:47 AM
You have less PCI-E lane available on z77.

Z77 have 16 PCI-E lanes

X79 have 40 PCI-E lanes

If you put a PCI-E device on the Z77 such as a capture card or sound card(which only use 1 PCI-E lane), you will sadly go down to 8X on a single GPU configuration.

As for games running 8X vs 16X configuration you won't tell much of a difference on a single screen setup.
Sabertooth X79|Core i7 3930K @4.3GHz|Zalman CNPS12X|Kingston HyperX 8X4GB CL9|VisionTek HD7970 3GB|10TB storage|Silent Pro M1000W|TC-32LZ800|Corsair 800D