It depends if you have a good sample or a bad one. Mine is bad, it will only run full core load @3,8GHz with ~1.325V. This is with everything set to stock, the Spire will let the cpu run @80C while the fan spins @3000rpm and that makes a lot of noise. Better cpu's will run all core loads at less voltage, so the Spire can keep it's fan in check.
For testing I switched to the BeQuiet Pure Rock Slim, which is only a 120WTDP cooler and a budget one in general and it performs more or less the same as the Spire. It's fan only runs @2000 rpm making it much quieter. A 212 Evo is a much better cooler.