One reason to not get the slowest current generation processor is that not all Core 2 Duo's support the new virtualization instructions. If you're a cross platf

One reason to not get the slowest current generation processor is that not all Core 2 Duo's support the new virtualization instructions. If you're a cross platform developer using virtual machines a lot, the extra 10-20% cost for a faster Core 2 might be worth it.