ASROCK B550m-HDV
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Max Output Capacity: 1200W. This enters the enthusiast/workstation tier. It provides immense overhead for heavily overclocked systems, dual-GPU setups, or high-end rendering workstations.
PCIe 12+4pin (12VHPWR / 12V-2x6). This is the headline feature. Having two native PCIe 5.0 12+4pin cables means this unit can comfortably power two modern high-end GPUs (like two RTX 4090s or next-gen workstation cards) simultaneously without relying on messy, unsafe adapters.

Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors
6 Power Phase Design
Supports DDR4 4733+ (OC)
1 PCIe 4.0 x16, 1 PCIe 3.0 x1
Graphics Output Options: HDMI, DVI-D, D-Sub
7.1 CH HD Audio (Realtek ALC887 Audio Codec)
4 SATA3, 1 Hyper M.2 (PCIe Gen4 x4 & SATA3)
6 USB 3.2 Gen1 (2 Front, 4 Rear)
Gigabit LAN