GIGABYTE B840M DS3H AMD Motherboard

The GIGABYTE B840M DS3H is a Micro ATX motherboard built on the AMD B840 chipset for the AM5 platform, offering a solid foundation for systems powered by AMD Ryzen 7000, 8000, and 9000 Series processors. Measuring 24.4 cm x 24.4 cm, it fits neatly into compact and mid-tower cases without sacrificing connectivity or feature depth. At the heart of its performance story is GIGABYTE's X3D Turbo Mode, a BIOS-level feature that applies tailored optimization parameters to help Ryzen 9000 X3D and non-X3D processors deliver improved gaming frame rates and reduced latency with a single click. Complementing this is the AORUS AI SNATCH function, which uses one-click acceleration to boost CPU and DDR5 memory throughput — claiming up to 9% gains in CPU and memory performance and up to 8% in AI processing workloads under optimized conditions. Memory support is extensive: four DDR5 DIMM slots accommodate up to 256 GB of system memory (64 GB per DIMM) in dual-channel configuration, with speeds ranging from 4400 MT/s up to 8200 MT/s via overclocking. Both AMD EXPO and Intel XMP profiles are supported for straightforward memory tuning, and GIGABYTE's UEFI BIOS provides AMD EXPO user profiles, custom SPD profile management, and fast performance simulation for memory timing adjustments. Storage is handled by two CPU-connected M.2 slots (PCIe 4.0 x4) supporting drives up to 110 mm in length, alongside four SATA 6 Gb/s ports with RAID 0/1/5/10 support for NVMe and RAID 0/1/10 for SATA devices. Expansion includes a CPU-linked PCIe 4.0 x16 slot and a chipset PCIe 3.0 x4 slot. Connectivity on the rear panel includes HDMI 2.1 (4K@60 Hz), two DisplayPort 1.4 outputs (4K@144 Hz), Realtek 2.5 GbE LAN, one USB Type-C (USB 3.2 Gen 1), two USB 3.2 Gen 1 Type-A ports, four USB 2.0 ports, a PS/2 port, and three audio jacks. Onboard audio uses a Realtek HD Audio CODEC supporting up to 7.1-channel output, with high-end audio capacitors and a PCB-level audio noise guard for cleaner signal separation. The board's power delivery uses an 8+2+2 phase digital PWM design with 60 A DrMOS components. GIGABYTE's AI-Driven PCB Technology — comprising AI-ViaFusion, AI-Trace, and AI-Layer sub-technologies — is applied during PCB design to optimize via sizing, trace routing, and layer stackups for signal integrity, with AI-ViaFusion targeting up to 28.2% reduction in signal reflection compared to conventional methods. Smart Fan 6 thermal management supports PWM and DC fans as well as water cooling pumps, with up to 24 W (12 V x 2 A) per header, over-current protection, Fan Stop technology, and customizable fan curves via a seven-point BIOS interface. Two addressable RGB Gen2 headers and one standard RGB header are present for lighting control through GIGABYTE Control Center (GCC) and RGB Fusion. Additional highlights include Q-Flash Plus for BIOS updates without a CPU or RAM installed, a Multi-key button with BIOS-configurable functions (Direct-To-BIOS, Safe Mode, RGB Switch), and an AORUS+HWiNFO co-branded OSD for real-time monitoring overlays. The board runs Windows 10 and Windows 11 (64-bit). Verified Specifications: - Form Factor: Micro ATX, 24.4 cm x 24.4 cm - Socket: AMD AM5 - Chipset: AMD B840 - Compatible CPUs: AMD Ryzen 7000 / 8000 / 9000 Series - Memory: 4x DDR5 DIMM, up to 256 GB, dual-channel, 4400–8200 MT/s (O.C.), AMD EXPO and XMP support - Primary PCIe: 1x PCIe 4.0 x16 (CPU) - Secondary PCIe: 1x PCIe 3.0 x4 (Chipset) - M.2 Slots: 2x M.2 (PCIe 4.0 x4, CPU-connected) - SATA: 4x SATA 6 Gb/s - LAN: Realtek 2.5 GbE - Audio: Realtek HD Audio CODEC, 7.1-channel - Display: 1x HDMI 2.1, 2x DisplayPort 1.4 - USB Rear: 1x USB-C 3.2 Gen 1, 2x USB 3.2 Gen 1 Type-A, 4x USB 2.0 - VRM: 8+2+2 phase digital PWM, 60 A DrMOS - BIOS: AMI UEFI, 256 Mbit flash - OS Support: Windows 10/11 64-bit