Gaming on a Laptop using an External GPU
Why Super User recommends it
Super User answerers and commenters link it as a concrete example that an external GPU can be hooked up to a laptop when its internal graphics cannot be upgraded.
Recommended by 1 people across 1 different months, 2015 to 2018.
What it is
A short experimental video from DIY Perks in which the presenter connects a desktop graphics card to a laptop using a cheap EXP GDC external PCI-E adapter, then tests how well it plays games. It shows the hardware setup, the extra power supply wiring, and the results.
What people said
Recommends cybernard · 2018-07 · Super User · on “Laptop upgrade possibilities. How and why (or why not)?”
Your laptop can't support the upper limit of the video card you have there is no chance of it support and upgraded video card. The laptops power supply would melt/break under the load of an upgrade card, if you could fit one in. This is why it is not allowed. However, a bit of research turned up external graphics cards for laptops. I don't know if it is compatible or not, but you might be able to find a compatible version. [LINK] I went and found, what I think is your laptops motherboard. [LINK] I found a description of the wifi card which states PCIE half size Mini-Card . If this is truly a pci-e x1 slot then if you cut a hole in your case and got and adapter card that could plug into it to
Cites uylmz · 2015-05 · Super User · on “External GPU through expresscard slot - Power up PSU”
[this video] At 1:30 it's clearly seen that 20 pin connector has 2 lines of cable. I'm not sure if it's possible to power on with only 1 line of cable.
Cites ap0 · 2015-08 · Super User · on “can i add two dedicated graphics card in my dell inspiron 5420 laptop?”
As far as I know no laptop allows to change the gpu because most (or all) are soldered to the board - as said by Ramhound in the comments. However you could use an external GPU together with your laptop as shown here: [this video] But in that case it might be more practicable to upgrade to a new laptop.