Benchmarks: Memory
Memory bandwidth is lopsided on the Ryzen 7 3700X platform, and this is due to the way the chip is constructed. To recap, each Core Complex Die (CCD) is connected to the chiplet I/O die (cIOD) via Infinity Fabric that reads at 32 bytes per cycle but only writes at 16. This is why Ryzen 7 3700X's single-CCD design suffers a drop in write bandwidth by almost half. Our tests have shown little real-world impact, but if you are keen to prioritise bandwidth, note that the dual-CCD Ryzen 9 3900X won't exhibit this peculiarity.
Being critical, we'd prefer PC Specialist used DDR4-3200 memory instead; it's officially supported by the processor and there's barely any premium for the faster sticks.