The Core i7-6950X has an unlocked clock multiplier, which means it is possible to overclock it just by changing the multiplier on the the motherboard setup.

We were able to run it rock-solid stable up to 3.8 GHz, with 100 MHz base clock and x38 multiplier, maintaining the cache at 3.0 GHz. At 3.9 GHz, we detected some instability.

However, keep in mind that we didn’t change any tensions or advanced options, which means that, with some patience, you may reach higher rates.