Perhaps someone can explain this to me. An i7 has a transistor count of 731M. A Pentium has a transistor count of 3M. So in principle, Intel could build a 200 core processor today. Each core would be no "smarter" than a Pentium, but that's pretty much all you need. Now, I recognize that this is extreme, and such a processor would be bottlenecked by memory bandwidth, but the basic idea seems sound - gain throughput by putting more, less capable, cores on the chip: 20 or 25 Pentium 4's seems not to be outside the realm of possibility. Why don't we see this on the market?