Other Considerations and Stability Testing
The overclock above was quite easy to achieve and resulted in big gains in regards to overclocking. 4GHz on the CPU core, 1500Mhz on the GPU core, and 3200Mhz on memory is a good solid overclock that doesn't require too much in regards to voltages. However, each chip is different.
Prime 95 and FurMark are pretty much some of the most intense stability testing programs on the market. So much, that Furmark has a warning about damaging your GPU and people have seen their CPUs degrade from prolonged Prime95 testing. There are many other stability testing programs you can use that might not be as intense, or you can just try playing your favorite games and see if you encounter any issues.
On this platform, I wanted to mention that you should definitely overclock the memory if you feel comfortable doing so. The Infinity Fabric speed runs at the same speed as your system memory, which is how CCXs communicate (not a concern here b/c of only one CCX), but it's also how the iGPU and CPU communicate. The Zen core and Vega graphics benefit in regards to communication when you OC the memory.
We know that AMD's mobile APUs use Synergistic Power Rail sharing, where the CPU and iGPU share a voltage regulator. However, when we test under a thermal camera, we find that the SoC VRMs light up during gaming but stay pretty much silent during CPU-only testing. We will leave you with a thought; if you want to overclock your iGPU and CPU with ease, make sure that your motherboard has a solid SoC VRM as well as a solid CPU VRM.
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