Read on http://nl.wikipedia.org/wiki/Perfect_magische_kubus all about the features of the perfect magic cube. The smallest perfect magic cube is the 5x5x5 magic cube.
See on www.trump.de/magic-squares/magic-cubes/cubes-1.html the following 4x4x4 magic cube. This 4x4x4 magic cube is almost perfect.
This 4x4x4 magic cube has the following magic features:
'Thomas4art' constructed in 1982 already a simular 4x4x4 magic cube; see on