Contrary to popular belief, very few N64 games ran at 640x480. : r/Games
Super Mario 64 PC Port Shows The Game Running At 4K And With Ultra Widescreen Support | Nintendo Life
Better textures and internal resolution with the paralell core on Retroarch__ - Emulation - LaunchBox Community Forums
Nintendo 64 – Libretro
An emulator that can play the game of NINTENDO 64 with a maximum resolution of 8 times has appeared, and a play movie is also available - GIGAZINE
Getting The Best Picture Out Of Your Nintendo 64: The RGB Edition - Feature | Nintendo Life
N64 Emulation: MasterFeizz releases ARMv6 dynarec version of DaedalusX64 for the 3DS & ports it to the Vita version - Mario Kart 64 & Super Mario 64 are now effectively playable on