AMD B550 Chipset Supports AMD Ryzen 5000 Series, 5000 G-Series, 4000G-Series, and 3000 Series processors Support Socket AM4 Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC Supports DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400+ MHz by A-XMP OC MODE 1DPC 1R max speed 4400 MHZ 1DPC 2R max speed 3733 MHZ 2DPC 1R max speed 3866 MHZ 2DPC 2R max speed 3466 MHZ