Benchmarks: Core
Increased frequency is always helpful in PiFast, and a sub-15s time is hard to beat with the current architecture.
There's very little difference between the standard results from the Core i5-4670 and Core i5-4690K - the latter is clocked 100MHz higher. Overclocking provides a 20 per cent boost in performance, but it's not enough to overcome the benefits of hyperthreading present on the Core i7 CPUs.
Running at 4.4GHz on all cores, the 4690K OC is about as fast as a Core i5 can be.
