KHg8m3r was probably referring to its Turbo Boost clock, not its stock clocks. We had one user who provided a very detailed of their purchase of the Gigabyte Brix Pro model in question; I need to look it up, but I think it was able to maintain that Turbo Boost for a bit in Dolphin testing. At any rate, a 2.7GHz Haswell with the latest Dolphin revisions should run most everything without issues except for notably demanding games.
EDIT - Ninja'd by the man himself...
EDIT - Ninja'd by the man himself...