Normally we’d expected to achieve 4.3GHz with 1.3 volts or less for our X99 overclocking. However, due to a faulty CPU developing we have had to swap our i7-6950X for another sample.
On this ASRock X99 motherboard our replacement CPU achieved 4.2GHz at 1.3 volts – a fair result given how most Core i7 6950Xs overclock.
Reducing the voltage to 1.28v resulted in system stability, while increasing the frequency to 4.3GHz and voltage up to 1.325 and 1.35 volts still resulted in instability.
Both the performance and power consumption reflect the frequency and voltage used, respectively.