noob2egpu

Okay... So I got this fancy new computer back in May at the microsoft store. I just assumed it would be up to spec with the latest and greatest software... because, to be perfectly honest, I am barely a novice when it comes to understanding computer hardware. Anyway, turns out this computer is a fancy new tablet/laptop hybrid, blah blah blah, and while it's sleek and nice it has just the intel HD 5500 graphics card with 128 dedicated vRAM.... This sucks. I like to game here and there, and it works well at a low to medium level for starcraft II and a few other games I like to kill time with. I was hoping their would be an easy way to improve my graphics... but the BiOS doesn't offer a way to change the dedicated vRAM, apparently because laptops can't or rarely can do that in their BiOS. That lead me down the rabbit hole of exploring other options and I was happy to stubble across the eGPU that seems to be something even I could put together and build with my limited computer knowledge and skill. However, this laptop doesn't have a express card port. It's designed to be sleek and light and so it only has an hdmi port and 3 usb ports: 1 usbSSLightBolt, 1 usb SS, and 1 just usb. I started to look for ways to adapt the eGPU set ups to my laptop via the usb connection but nothing I found sounded promising, either it wasn't possible, or the usb driver wouldn't be campatible, or the usb (even 3.0) simply wouldn't be fast enough to make a eGPU worth installing/creating. After reading an article on PC World's Website by Ian Paul I came across this site and thought I would ask the community for some more direct answers about my problem. Here are the basic specs: Dell Inspiron 7348 Intel Core i7-5500U CPU @ 2.40GHz 2.40 GHz (Quad Core) 8.00 GB RAM 64-bite operating system, x64-based processor and a pen and touch and all these bells and whistles I don't use.... Can I install a eGPU on this laptop, and even if I can is it worth it? I have an untouched Nvidia Geforce 8400 GS EVGA Graphics card... Would it even be worth installing if I could? Again, I'm a novice with this stuff so please... take it easy on this noob.