Originally posted by LethalGeek
You also have to consider that your NES games don't get bigger than 256K ROM and 128VRAM (or so) while SNES games are 16Mb. PSX has a memory of 512K, so the NES games can get preloaded right into memory while the SNES games have to be constantly loaded.
But the games were remade with new graphics very similar to the SNES. Doesn't that mean that they occupy more memory?