A significant number of people in the forum ask how to run Second Life™ on a laptop that has ample memory and CPU power but lacks adequate GPU power. The answer is disappointing, your hardware is not gonna cut it.
Now I find there is a way to add a PCI graphics card to a laptop. It isn’t pretty but, apparently it works.
Check this out: EXP GDC Laptop External PCI-E Graphics Card. You could add a GTX980 to a 4 year old laptop.
I am not endorsing the product. You are on our own deciding if this is for you. I am just pointing out a possibility.