eGPU help for an i7-7500U

[weechc]

Hey all, I'm looking at buying an eGPU to try to upgrade my current laptop. I have a 15 inch HP Spectre x360 with an i7-7500U with 16 GB of RAM and an MX 940 card inside. I have been looking at both the Aorus Gaming Box 1080 and the 1070 as my best options so far. Unfortunately, the laptop is only 2 cores and 4 threads and the Thunderbolt port only has 2 lines coming from it. Therefore, the question is would I see a significant increase in performance by having the 1080 as opposed to the 1070 or would they both perform similarly due to bottle-necking from the power of the CPU. I'm planning on getting an external monitor for it which should help but I'm a little stuck on which would be the better deal for me.

Thank you all for helping out. I'm not the most knowledgeable when it comes to computers so I appreciate any and all help you guys can give me.

 

[PP Mguire]

It'll work fine, the issue being the bottleneck being both the CPU and the TB3 interface. Any game that is CPU demanding will buckle quite a bit.