The technical data …
| Manufacturer | ASRock |
| Name | B450M Steel Legend |
| Type / Chipset | AMD AM4 CPU / AMD B450 Promontory B450 chipset |
| Dimensions | ++++ 23 mm (45 mm radius) around the socket to the next capacitor or other mainboard parts – for further information see Fit for Fan. The space to the next bigger heatsink is approx. 42 mm (64 mm radius). The overall size of this Micro ATX motherboard is 244 x 244 mm. |
| Slots | ++++ PCIe 3.0: 1×16, 1×4, 1×1, 4x DDR4-800 – DDR4-2666, max 64GB RAM |
| Connectors | ++++ 4x SATA3, 1x Ultra M.2, 1x M.2, 1x PS/2, 1x 10/100/1000 Mbps base-T Ethernet (Realtek RTL8111H), 1x USB 3.1 Gen2 Type-C, 1x USB 3.1 Gen2 Type-A, 6x USB 3.1 Gen1 Type-A (2x of them internal, slot bracket for additional ports is not included), 6x USB 2.0 (4x of them internal, slot bracket for additional ports is not included), 8-Channel Realtek ALC892 onboard 7.1 sound with 5x 3.5 mm connectors (1x optical S/PDIF, 1x int. Aux, ext. Line in, ext. Mic, ext. Front out, ext. Rear out, ext. Center/Subwoofer), 1x DisplayPort 1.2, 1x HDMI and 5x Fan (5x 4Pin) |
| VCore | ++++ In the VCore BIOS of 0.87500 volts up to 1.5500 volts or -0.100 to +0.200 Offset |
| Multiplier | ++++ In the BIOS from 16x to 63x (maximum multi depending on the CPU) |
| BCLK | – In the BIOS not directly changeable. |
| VIO/VDD | +++ DRAM Voltage (DDR4 voltage) 1.100 to 1.400V, GPU 0.90000 to 1.55000V, CPU SOC 0.9 to 1.55 Volt, +1.8V Voltage 1.700 to 2.050V, VDDP 0.950 to 1.350V. |
| Performance* | ++++ Benchmark values comparison with different graphics cards and benchmark tools.
SiSoftware Sandra 2017 benchmark values with AMD Ryzen 5 2400G APU. Benchmark results with AMD Ryzen 5 2400G processor OnBoard AMD Radeon Vega GPU (AMD Ryzen 5 2400G): 1x MSI Radeon R9 280 Twin Frozr Gaming 3GB PCIe 3.0 graphics card: |
| Manual and Labeling | +++ For an uATX motherboard well placed, complete motherboard description and good manual with a lot of tips about topics like CPU installation, memory installation, etc.. The manual comes in different languages. In addition a separated Software Setup Guide with UEFI settings is contained. |
ASRock B450M Steel Legend Layout, Design and Features …