Both of my machines have 4GHz Intel i7 6700K CPU's. A poster on another forum said these chips are pretty old. Simple question, is there a more up-to-date i7 that I can install on the existing mother boards that would a) improve their performance and b) improve it enough to make it worth while. I do not want to upgrade the full builds yet. They run 24/7 number crunching BOINC and Folding scientific work, improvements are always welcome for the science.