I'm in the process of saving up to buy a new laptop and because I've just discovered game emulators for the PC, what are the top necessary hardware components like cpu, ram, graphics card, storage etc. to play game emulators for available consoles (NES, SNES, PS1, PS2 etc.) so that I can purchase the right laptop for this.
For ex. the Dolphin emulator requires an Intel Core i5-4670K cpu to play Wii games.
Or should I get a desktop?