Optimize for multicore systems

Hi,

I'm using a computer with an AMD 6 core CPU. When I spawn a huge amount of enemies the framerate drops till the game is unplayable. However using Core Temp I can see that only 1 core is stressed. The other cores are at about 5% load. So here come my questions:

1. Does Unity support multicore systems ?
2. If it does, how can I use more than one core ?

I already thought about using more than one thread in my script. The only problem is, that I don't need more than one thread.

1. Do you need more than one thread ?
2. Are there game architectures that support Unity with its "internal" multithreading ? I guess that many small scripts may be superior to one big script.

Any advice would be appreciated.