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

For overclocking, I set a fixed voltage of 1.4 V and started increasing clocks, while checking stability at the same time. This is extremely easy due to AMD Ryzen Master, which has come a long way and is now top-notch.

My highest all-core maximum stable overclock using an air cooler was 4.6 GHz. Actually, I could run nearly everything with 4.7 GHz, except for some AVX tests, which weren't stable unless I went over 1.45 V. Once I settled with a 4.6 GHz OC, I could lower the voltage to 1.35 V, which is quite a bit, with the CPU completely stable.

Using a 240 mm AIO made no difference for overclocking,