For our manual overclocking efforts, we were a bit more ambitious. We initially shot for a lofty 5.5GHz all-core overclock at 1.35v, but we couldn't get the system stable. At this speed, the system booted, but the chip's temp would quickly shoot to 95°C as expected and under sustained load our rig would shut down. So, we backed the voltage and multiplier down incrementally and eventually settled into a 5.3GHz all-core overclock at only 1.3v, while also running the memory at DDR5-6000.