Samsung series 7 ultrabook eGPU

[enigmaxx]

I have a Samsung Samsung NP740U3E-K01UB, that I'm looking into an eGPU solution for. I know what parts I need to order, but I'm torn and wondering how reduced gfx quality will be in this laptop.

It has an i5 3337u, and looking on intels website I found..
"PCI Express Revision 2.0
PCI Express Configurations ‡ 1x16, 2x8, 1x8 2x4"

from what I've read, pcie 2.0 would roughly cut the performance in half.
At what point would I run into diminishing returns for gpu quality?

 

[popatim]

The problem is the interface to the laptop. You don't appear to have any interface available except for the wireless adapter slot which is an x1 slot
You also have a uSB3 port that could be utilized but that has the same bandwidth as the x1 pcie lane.

 

[enigmaxx]

The problem is the interface to the laptop. You don't appear to have any interface available except for the wireless adapter slot which is an x1 slot
You also have a uSB3 port that could be utilized but that has the same bandwidth as the x1 pcie lane.

I have not seen usb3 egpu solutions. Would you mind linking? I had originally planned to use that wireless card slot and run net through the rj45, but if I can use USB that would be infinitely more convenient.

To my original point - if you were in this situation, what would you grab? I was thinking maybe an r9 fury? Or would Nvidia be easier to set up? (I've heard some issues with running amd egpus)