System Builder Marathon, Q1 2013: $600 Gaming PC

Results: Productivity

All four of these productivity-oriented applications are well-threaded, and our quad-core processor rewards us with gains that range between 84-125% throughout the suite, even before overclocking is considered.

Going down the list, we see that overclocking does help our Core i5 to some degree. However, those massive gains are certainly attributable to four physical cores, no doubt.