Can i upgrade the discrete graphics card on this laptop

nibrocd

Honorable
Nov 11, 2013
1
0
10,510
Link here
http://www.shopping.hp.com/en_US/home-office/-/products/Laptops/HP-ENVY/902171?ENVY-15z-j100-Notebook-Best-Value

It comes with an apu which is a cpu and gpu on one chip and the added amd 8750m discrete chip. It uses both gpus at once called amd dual graphics

The amd 8750m it came with has 2 gb ddr3 ram for graphics. Would it be possible to buy a amd 8750m (same chip) but with ddr5 ram. Or a different dual graphics compatible chip thats better.

The computers a laptop. The hp envy 15z j100

There is a different model of this laptop but it comes only with the apu and no discrete graphics

Discrete means its not soldered in right?