The B450 chipset is the heart of the ASRock B450M Pro4 motherboard and was specially optimized for the Ryzen CPUs of the 2000 series (Pinnacle Ridge). B450 mainboards support all the features of Ryzen's second generation processors, including the new XFR2 overclocking feature. In addition, the motherboards support up to 64 GB of RAM with a guaranteed clock rate of 2,933 megahertz. Depending on the motherboard, significantly higher clock rates are also possible using overclocking, and the B450 chipset also enables the processor to be overclocked.