You can't bring faith into this. It would not work.

If you are really going to enhance server performance with dual-core, then you also need to enhance the I/O bandwidth and memory at the same time, ... So when we went to release our eighth-generation servers, we put PCI-Express on all of the I/O slots and used DDR-2 memory as the new memory standard on the platforms.

Dual-core does not replace single-core. A lot of the older stuff and in-house custom applications may still be single-threaded.