I have recently bought a Porta Pi Arcade, which is basically an RPi powered arcade machine running emulation station and retro pi. I am currently running mame, Sega genesis etc. Using the Pi 2 i have managed to play some N64 games, but not all run as well as i would like them to. So i wanted to put 2 Pi 2's together or upgrade the CPU performance and ram to try to run PSX and N64 games. So in essence, is it possible to upgrade CPU and ram on the RPi 2? if so how?
Would it be easier to make a RPi cluster to achieve the same thing, I have seen some videos on YouTube on how to build one, but none really explain if it works like one big computer or just 2 Pi's sharing tasks, and if they do split the tasks will it work in my case?