Ok, let me explain to the downvoters. As the top comment on reddit currently states, there's no issue with speed of light, the issue is with heating. And there

Ok, let me explain to the downvoters. As the top comment on reddit currently states, there's no issue with speed of light, the issue is with heating. And there's no "3.5Ghz" limit, stock, mass produced heating solutions limit us. People get all sorts of crazy clock speeds by improving their cooling, mine's on Zalman 9500 fan and has no stability issues to run at 4.2Ghz (stock 3.0Ghz).