GIGABYTE B840M D2H AMD Motherboard

The GIGABYTE B840M D2H is a Micro ATX motherboard measuring 24.4 cm x 24.4 cm, built on the AMD B840 chipset and compatible with AMD Socket AM5. It supports AMD Ryzen 9000, 8000, and 7000 Series processors, making it a versatile foundation for mainstream AMD builds. Memory support is a highlight: two DDR5 DIMM slots accommodate up to 128 GB of system memory (64 GB per DIMM), with speeds ranging from 4400 MT/s up to 7600 MT/s in overclocked mode. Both AMD EXPO and Intel XMP profiles are supported, enabling straightforward memory tuning through the BIOS. For storage, the board provides two M.2 connectors — M2A_CPU (PCIe 4.0 x4, types 2580/2280) and M2C_SB (PCIe 3.0 x2, type 2280) — alongside four SATA 6 Gb/s ports. RAID configurations (0, 1, 5, 10) are supported for NVMe drives, while SATA supports RAID 0, 1, and 10. Expansion is handled by a CPU-connected PCIe 4.0 x16 slot (x16 mode for Ryzen 9000/7000; x8 or x4 mode for Ryzen 8000 variants) and a chipset PCIe 3.0 x4 slot. Onboard graphics output comes via HDMI 2.1, supporting resolutions up to 4096x2160 at 60 Hz with HDCP 2.3 and HDR, dependent on CPU support. Connectivity is provided by a Realtek 2.5 GbE LAN chip and Realtek High Definition Audio with 2/4/5.1/7.1-channel support. The back panel includes two USB 3.2 Gen 1 ports, four USB 2.0 ports, one HDMI port, an RJ-45 port, three audio jacks, a PS/2 port, and a Q-Flash Plus button for BIOS updates without a CPU installed. The VRM features a 5+2+2 phase digital PWM design with 60 A DrMOS. Fan management is handled by GIGABYTE's Smart Fan 6, supporting PWM and DC fans plus water cooling pumps, with up to 24 W (12 V x 2 A) per fan header, fan stop at low temperatures, and seven adjustable control points via slope or stair curve modes. The board's BIOS is a 256 Mbit AMI UEFI implementation with GIGABYTE's UC BIOS interface, offering Q-Flash and Q-Flash Plus for update convenience, an AORUS AI SNATCH one-click CPU and DDR5 performance boost feature, X3D Turbo Mode for Ryzen 9000 series processors, AMD EXPO profile management, and AIO fan speed control pre-OS. GIGABYTE Control Center (GCC) software and HWiNFO co-branded OSD are also supported. Audio circuitry is isolated from digital components via an onboard noise guard, and the board includes two ARGB Gen2 LED headers plus one standard RGB header. Verified Specifications: - Form Factor: Micro ATX, 24.4 cm x 24.4 cm - Socket: AMD AM5 - Chipset: AMD B840 - CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series - Memory: 2x DDR5 DIMM, up to 128 GB, up to 7600 MT/s (O.C.), AMD EXPO & XMP - Storage: 2x M.2 (PCIe 4.0 x4 + PCIe 3.0 x2), 4x SATA 6 Gb/s, RAID 0/1/5/10 (NVMe) - Display: 1x HDMI 2.1 (up to 4K@60 Hz, HDCP 2.3, HDR) - LAN: Realtek 2.5 GbE - Audio: Realtek HD Audio, up to 7.1-channel - USB (rear): 2x USB 3.2 Gen 1, 4x USB 2.0 - VRM: 5+2+2 phase digital PWM, 60 A DrMOS - BIOS: 256 Mbit AMI UEFI, Q-Flash Plus - OS: Windows 11 / Windows 10 (64-bit)