The only way to portably upgrade the Wii. Is to open it up. Take out your solder iron and change the parts with compatible superior ones. Of course there might be limitations due to bandwidth size, but they you upgraded it.
Squilliam: On Vgcharts its a commonly accepted practice to twist the bounds of plausibility in order to support your argument or agenda so I think its pretty cool that this gives me the precedent to say whatever I damn well please.