I don't think there are any Core i7s out with eight cores. The Xeon 5500 seems to be a quad core processor, so you're multiplying too much. If I'm wrong, please post a link showing what you're reading. Thankx
You are right that the Core i7s don't have eight cores, but since they offer hyper-threading, they have two threads per core. So two Xeon 5500s with four cores each plus hyper-threading result in 16
virtual cores.