Overclocking on air
As always we tried to overclock the processor. It certainly is doable but proper liquid cooling is a must with this processor series. our processor is capable of reaching a stable at 5200 MHz all-core. 5300 MHz will boot fine, however created too many stability issues. At that point, we'd pass 1.5 Volts on the CPU. The heat production is considerable!. Realistically I'd say, leave tweaking for what it is as the defaults of these processors are already really close towards these performance regions.
Above: 5200 MHz all core yields 410W power consumption (system / GPU inactive)
Above: 5300 MHz boots fine, but under load is unstable - we did not want to push voltage any higher.