Clock Frequencies

The following chart shows how well the processor sustains its clock frequency and which boost clock speeds are achieved at various thread counts. This test uses a custom-coded application that mimics real-life performance—it is not a stress test like Prime95. Modern processors change their clocking behavior depending on the type of load, which is why we provide three plots with classic floating point math, SSE SIMD code, and the modern AVX vector instructions. Each of the three test runs calculates the same result using the same algorithm, just with a different CPU instruction set.

Overclocking

The Ryzen 7 5700X comes with a fully unlocked multiplier, which makes overclocking very easy. I dialed the voltage up to 1.35 V and kept increasing the multiplier in Ryzen Master until the system became unstable. There was no way that 4.6 GHz all-core would be stable, so I settled for 4.5 GHz, which let me reduce the voltages quite a bit, so power efficiency was still good.