Things like Incredibuild can only help so much. You still need to have a decent project structure, and enough computers to effectively cut down compile time.

Though (as mentioned in another comment) if your project is a big ball of inter dependencies then the link time will dominate.

I've seen compile times with Incredibuild that are less than a minute, but the link takes 5-10 minutes. Or better yet crashes due to the pdb size.