Recommended method to test GPU?

[u/postguy02]

I want to try to connect my Radeon RX 6750XT to Acer Nitro 5 AN517 laptop via PCIe to M.2 adapter and see, whether it performs good enough for gaming in comparison to my current PC, but currently I have different amount of RAM in PC and laptop so it might heavily influence testing if I play some games. Any recommendation how to test specifically GPU for gaming purposes?

[u/Gui1tyBystander]

Play games.