Ye guys, from experience the bottleneck is weirdly not an issue. this may be because I connect my screen directly to my eGPU
to explain I have a alienware 15 and 17 both with graphics amplifier with GTX 980
It seems the more i throw at the videocard the less the gap between a desktop and my performance.
To explain, the GA runs at PCIEx4 which is horrible compared to 16x on a desktop.
But on firestrike standard I get 15262 on GPU score (have scored higher but thats with and older driver) which is alittle of a loss to a desktop with similar clockrates etc
but on firestrike ultra, I get 3536 GPU score which is pretty damn close if not better.
So the more GPU dependent (i.e. 4K etc) the less the bandwidth is an issue.
Also a very simple way of knowing the pci bandwidth isnt limiting me is on Black ops 3 i get around 110FPS everything on MAX on the GA, then I overclock and get over 155FPS all the time.
So that massive performance bump wouldnt happen if the PCI lanes were saturated.
I am not a fan of this setup though, I want the plug and play of thunderbolt 3 egpu (currently I have to shutdown to unplug)
Thunderbolt 3 eGPU solutions arriving 4th quarter 2015, mainstream in 2016
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