Wii U keeps the original Wii/Gamecube GPU. It has another chip behind it that scales it to HDMI. This is also why Wii 240p doesn't work on the Wii U. Instead o

Wii U keeps the original Wii/Gamecube GPU. It has another chip behind it that scales it to HDMI. This is also why Wii 240p doesn't work on the Wii U. Instead old VC games will be a slightly blurry 480p at best. If you want the clearest 480p, the original Wii will do. With component cables and a compatible TV, it should be just as clear as DreamCast VGA.