I'm not convinced this is the right criteria to compare these processors (core count and purchase cost). When looking at these high core count processors, the

I'm not convinced this is the right criteria to compare these processors (core count and purchase cost). When looking at these high core count processors, the typical use case is for a server in a data centre, and these sorts of applications run 24/7 and the cost of power is a massive part of the TCO. I think you have to address power per gflop when evaluating performance for these parts, as this is the criteria they were designed against. I think the processors are costed in consideration of the TCO of a 2U dual socket machine with a 2-3 year expected lifespan. They will be designed and costed to show year on year improvements. Oh, and i'm not sure inflation was included as it will be relevant over the timescales involved.