Youll get more power consumption and heat but it'll be able to double your performance in many games.
Ive been able to get good FPS in CSGO and Fall Guys at 1080p using my 2nd hand Lenovo with its R7 3700U. Ive seen people playing GTA and Warzone with the same specs too!
Yeah some of the 240p PS2 and PS1 games look a bit jagged, but hey it works. You can see the compatibility here if you're interested in how a particular game runs
https://www.psdevwiki.com/ps3/PS2_Classics_Emulator_Compatibility_List
https://www.psdevwiki.com/ps3/PS1_Classics_Emulator_Compatibility_List
PS3 jailbreak