Memory overclocking performance has historically been a weak point of AMD’s Ryzen processors. This is true even on Socket AM5; where Intel-based DDR5 rigs can hit 7000, 8000, all the way up to the world record of 11,202 MT/s, AMD systems tend to struggle to get much past 6000 MT/s. On the Socket AM4 platform, memory overclocking was limited

Source: Hot Hardware – AMD’s Next AGESA Update For AM5 Pushes The Nitro Button For A DDR5 Speed Boost