The distance between cpu and the main memory chips is a seriously bottleneck.
A simple solution to start with is to place it closer together.
However maybe there are other more advanced solutions thinkable:
- Wormholes between cpu and main memory.
- Teleporation between cpu and memory.
Some say the speed of light is the limit.
Then other's say bending space might be a way to overcome this limit. (Warpdrives)
Maybe this can be done at microscopic levels... which could benefit computers...
So all I am saying is all these spaceship/science fiction idea's could be interesting for electronics/computers too ;)