Check the raspberry pi 3, It runs with a 4-core 64-bit processor at 1.2GHz and with 1GB of RAM. You'd think that of it has 4-cores, it has plenty of ram, it runs at 1+ GHz, and it's a 64-bit processor! It should work... but the ARM processor on the Pi3 still can't perfectly run a N64 emulator or a gamecube emulator. It's not over rated, it's the emulators we have are beefy and an arm processor can't deliver that performance.
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Facts > Hope/"intuition"