GIGABYTE B860M AORUS ELITE WIFI6E Micro-ATXマザーボード MB6791

This article covers GIGABYTE B860M AORUS ELITE WIFI6E Micro-ATXマザーボード MB6791.

Overview

The GIGABYTE B860M AORUS ELITE WIFI6E (model MB6791) is a Micro-ATX motherboard built around the Intel B860 chipset. It supports Intel Core Ultra processors (Series 2) via the LGA 1851 socket, bringing DDR5 memory and PCIe 5.0 connectivity to a compact form factor. This board features a Twin Hybrid Digital 12+1+2+1 phase VRM with 60A DrMOS, ensuring stable power delivery for demanding workloads. It includes four DDR5 DIMM slots supporting up to DDR5-9200 (OC), one PCIe 5.0 x16 slot, and a USB4 Type-C port with 40Gbps bandwidth. Positioned as a mid-range option, the B860M AORUS ELITE WIFI6E balances modern features with a reasonable price point, making it suitable for compact gaming PCs, creative workstations, and everyday productivity builds.

Compatibility Guide

The motherboard uses the LGA 1851 socket, which is exclusively compatible with Intel Core Ultra processors (Series 2). It is not backward compatible with LGA 1700 CPUs (12th through 14th Gen Core), so a new processor purchase is required. Memory support is limited to DDR5 UDIMM modules across four slots, with a maximum capacity of 256GB. XMP profiles are supported, enabling overclocked speeds up to DDR5-9200. Expansion includes one PCIe 5.0 x16 slot (CPU-attached) and one PCIe 4.0 x4 slot (chipset-attached). Storage options consist of one M.2 PCIe 5.0 x4 slot, two M.2 PCIe 4.0 x4 slots, and four SATA 3 ports, offering flexibility for high-speed NVMe drives and traditional HDDs. The Micro-ATX form factor (244mm x 244mm) fits most Micro-ATX cases. Rear I/O provides USB4 Type-C (40Gbps), DisplayPort 2.1, HDMI 2.1, 2.5GbE LAN, and Wi-Fi 6E antenna connectors.

Product Info

Released in early 2025, the GIGABYTE B860M AORUS ELITE WIFI6E occupies the mid-range segment of Intel's 800-series motherboard lineup. It omits CPU overclocking support found on Z890 boards but retains essential modern features like DDR5 and PCIe 5.0 at a more accessible price. The VRM consists of 12+1+2+1 phases with 60A DrMOS, covered by a full MOSFET heatsink. M.2 slots include thermal guards to prevent throttling during sustained reads and writes. Networking is handled by a Realtek 2.5GbE LAN controller and Realtek 2x2 Wi-Fi 6E module. Audio output supports 7.1-channel HD audio via the rear panel jacks.

Best Use Cases

For compact gaming PC builders, this motherboard is an excellent choice. The PCIe 5.0 x16 slot ensures full bandwidth for the latest graphics cards, while DDR5 memory reduces load times and improves frame pacing in modern titles. Creative professionals building a secondary workstation will appreciate the USB4 Type-C port, which enables fast external storage and high-resolution display connections (up to 8K via DisplayPort 2.1). The dual M.2 slots allow for a fast OS drive and a separate scratch disk. Budget-conscious DIY enthusiasts who want to experience the latest platform without paying a premium for overclocking features will find this board a cost-effective entry point. It delivers DDR5 and PCIe 5.0 support at a significantly lower price than Z890 alternatives.

Things to Consider

The most important limitation is the LGA 1851 socket's exclusivity to Intel Core Ultra Series 2 processors. Anyone upgrading from an older platform must budget for a new CPU, which can increase total build cost. CPU overclocking is not supported on the B860 chipset. While memory overclocking via XMP is available, users who want to push their processor beyond stock speeds should look at Z890 motherboards instead. The single PCIe 5.0 x16 slot is sufficient for single-GPU setups, but the second slot runs at PCIe 4.0 x4 only. Multi-GPU configurations or heavy expansion card usage may be bandwidth-limited. Finally, only one of the three M.2 slots supports PCIe 5.0 speeds. If you plan to use multiple ultra-fast NVMe drives, a higher-tier chipset board with more PCIe 5.0 lanes may be a better fit.

Product Disclosure (Amazon)

• Manufacturer: GIGABYTE
• Seller: Amazon.co.jp
• Fulfilled by: Amazon.co.jp
• ASIN: B0DQNTTYDP
• Note: This article covers a manufacturer-made product based on Amazon listing details.