I don't know these kind of things, but I am just gonna list some specs that I think might be relevant. I bought this laptop for studying, but now I have some free time for gaming (have played Skyrim and Rome 2 Total War (on lowest graphic settings) on this laptop which worked fine).
I have a Lenovo ideapad 720-15ikb.
processor: Intel Core i7-7500U CPU @ 2.70GHz (4 CPUs), ~2.9GHz
graphics: Intel HD Graphics 620
Total storage 8146 MB
VRAM: 128 MB
Radeon RX 560
Chiptype: AMD Radeon Graphics Processor
DAC: Internal DAC (400MHz)
Storage: ~12063 MB
VRAM: 4044 MB
Together used: 8018 MB