AMD is claiming multi-core superiority in the high-end desktop (HEDT) space with its newly minted Ryzen Threadripper 3990X, a monster of a CPU with 64 cores and 128 threads clocked at 2.9GHz to 4.3GHz. What’s the fun in sticking with stock settings, though? Overclockers have begun experimenting with the new chip, and there is a game of leapfrog