ASRock B450 Steel Legend, AMD B450, S AM4, DDR4, SATA3, Dual M.2, 2-Way CrossFire, Realtek GbE, USB 3.1 Gen2 A+C, ATX
Compatible with 3rd generation AMD AM4 Ryzen processors, future AMD Ryzen processors (3000 and 4000 Series). 6-phase power design. Supports DDR4 4733+ (OC) 1 PCIe 3.0 x16, 1 PCIe 3.0 x1. Graphics Output Options: D-Sub, DVI-D, HDMI
ASRock X570 Steel Legend, AMD X570, AM4, DDR4, PCIe 4.0, Dual M.2, 2-Way CrossFire, Intel GbE, USB 3.2 Gen2 A+C, ATX
Supports 3rd Gen AMD AM4 Ryzen™ / future AMD Ryzen™ Processors* AMD Ryzen series CPUs (Matisse) support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC un-buffered memory*
