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Gigabyte B860M E specifications and in-depth review

Gigabyte B860M E

Manufacturer: Gigabyte

The Gigabyte B860M E is a Micro-ATX motherboard designed around Intel's LGA 1851 socket and the B860 chipset. It carries a compact footprint of 244 mm × 215 mm, making it a practical choice for builds where space is a consideration without sacrificing core functionality. The board ships with a three-year warranty and includes dual BIOS support, which provides a fallback option in the event of a failed firmware update.

On the memory side, the B860M E accommodates DDR5 RAM across two slots with a rated maximum of 6400 MHz, extendable to 8800 MHz through overclocking, and supports up to 128 GB total capacity across two channels. Storage connectivity includes two M.2 sockets and four SATA 3 ports, with support for RAID 0, 1, 5, and 10 configurations. The rear I/O provides four USB 3.2 Gen 1 Type-A ports, two USB 2.0 ports, one HDMI 2.1 output, one DisplayPort, and a single RJ45 ethernet port. Audio is handled by a 7.1-channel solution with three audio connectors, and the board includes one PCIe 4.0 x16 slot along with one PCIe x1 slot for expansion.

Pros
  • Dual BIOS provides a fallback recovery option in case of a failed firmware update
  • Supports RAID 0, 1, 5, and 10, offering meaningful flexibility for storage redundancy and performance configurations
  • DDR5 memory can be overclocked up to 8800 MHz, well above the standard 6400 MHz rated speed
  • Two M.2 sockets alongside four SATA 3 connectors give reasonable storage expansion for a Micro-ATX board
  • Backed by a three-year warranty
  • HDMI 2.1 output is available for display connectivity without needing a discrete GPU output
Cons
  • Only two memory slots limit future upgrade flexibility, as the board is already at maximum channel capacity with two sticks
  • No USB Type-C ports on the rear I/O, including no USB 3.2 Gen 2 or higher connectivity
  • Wi-Fi and Bluetooth are absent, requiring a separate adapter for wireless connectivity
  • No S/PDIF output limits audio routing options for users with digital audio equipment
  • Easy CMOS reset is not supported, making BIOS recovery more cumbersome
  • Only three fan headers may be insufficient for builds requiring extensive airflow management
Who is this for?

This board is well suited to users building a compact desktop system who want a straightforward Intel platform with room for modern storage and memory. The Micro-ATX form factor makes it a practical fit for space-conscious builds that still require four SATA ports and two M.2 sockets. The support for DDR5 overclocking up to 8800 MHz and RAID 0, 1, 5, and 10 configurations also makes it relevant for home or small office setups where data redundancy and memory throughput matter. Users who value firmware reliability will appreciate the dual BIOS, and the three-year warranty adds a degree of long-term confidence for those planning a stable, low-maintenance build.

Who is this NOT for?

This board is not a good fit for users who need robust wireless connectivity out of the box, as there is no built-in Wi-Fi or Bluetooth — a meaningful gap for cable-free desktop environments. The absence of USB Type-C and USB 3.2 Gen 2 ports on the rear I/O makes it poorly suited to users who regularly connect modern high-speed peripherals or external storage devices. With only two memory slots and a single PCIe 4.0 x16 expansion slot, the board also falls short for those planning heavily expanded workstation-class systems that demand extensive multi-card or high-capacity memory configurations.

General info:

CPU socket LGA 1851
chipset B860
form factor Micro-ATX
supports Wi-Fi ✕
Has Bluetooth ✕
HDMI version HDMI 2.1
Easy to overclock ✓
has RGB lighting ✕
Easy to reset BIOS ✕
Has dual BIOS ✓
CPU sockets 1
Has integrated graphics ✕
warranty period 3 years
height 215 mm
width 244 mm
Has integrated CPU ✕

The Gigabyte B860M E is built around the LGA 1851 socket and is compatible with the B860 chipset, housed in a Micro-ATX form factor measuring 244 mm × 215 mm. It supports overclocking and includes dual BIOS for firmware recovery, though it does not offer an easy CMOS reset button. The board provides an HDMI 2.1 output but lacks integrated graphics and has no integrated CPU, meaning a discrete processor is required. Wi-Fi and Bluetooth are not included, and the board ships without RGB lighting. A single CPU socket is present, and the product is backed by a three-year warranty.

Memory:

maximum memory amount 128GB
RAM speed (max) 6400 MHz
overclocked RAM speed 8800 MHz
memory slots 2
DDR memory version 5
memory channels 2
Supports ECC memory ✕

The board supports DDR5 memory across two slots in a dual-channel configuration, with a maximum capacity of 128 GB. Standard RAM speed tops out at 6400 MHz, while overclocking can push that figure up to 8800 MHz. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A) 0
USB 3.2 Gen 1 ports (USB-A) 4
USB 3.2 Gen 2 ports (USB-C) 0
USB 3.2 Gen 1 ports (USB-C) 0
USB 2.0 ports 2
USB 3.2 Gen 2x2 ports 0
USB 4 40Gbps ports 0
USB 4 20Gbps ports 0
Thunderbolt 4 ports 0
Thunderbolt 3 ports 0
has an HDMI output ✓
DisplayPort outputs 1
RJ45 ports 1
Has USB Type-C ✕
eSATA ports 0
DVI outputs 0
has a VGA connector ✕
PS/2 ports 1

The rear I/O panel includes four USB 3.2 Gen 1 Type-A ports and two USB 2.0 ports, while USB Type-C, USB 3.2 Gen 2, USB 4, Thunderbolt 3, and Thunderbolt 4 are all absent. Display output is handled by one HDMI port and one DisplayPort, with no DVI or VGA connectors present. Networking is covered by a single RJ45 port, and a PS/2 port is available for legacy input devices. There are no eSATA ports on this board.

Connectors:

USB 3.2 Gen 1 ports (through expansion) 2
USB 2.0 ports (through expansion) 4
SATA 3 connectors 4
fan headers 3
USB 3.0 ports (through expansion) 2
M.2 sockets 2
Has TPM connector ✓
U.2 sockets 0
Has mSATA connector ✕
SATA 2 connectors 0

Internal connectivity includes two M.2 sockets and four SATA 3 connectors for storage, while SATA 2 and U.2 sockets are not present, nor is an mSATA connector. USB expansion headers consist of two USB 3.2 Gen 1 connectors, two USB 3.0 connectors, and four USB 2.0 connectors, allowing additional ports to be added via the chassis. The board also features three fan headers and a TPM connector for security module support.

Expansion slots:

PCIe 4.0 x16 slots 1
PCIe 5.0 x16 slots 0
PCIe 3.0 x16 slots 0
PCIe x1 slots 1
PCI slots 0
PCIe 2.0 x16 slots 0
PCIe x4 slots 0
PCIe x8 slots 0

Expansion options are modest but focused, with one PCIe 4.0 x16 slot serving as the primary slot for a discrete graphics card or similar full-bandwidth add-in card, alongside one PCIe x1 slot for smaller peripherals. There are no PCIe 5.0, 3.0, or 2.0 x16 slots, and no PCIe x4, x8, or legacy PCI slots are present, which reflects the compact Micro-ATX layout of the board.

Audio:

audio channels 7.1
Has S/PDIF Out port ✕
audio connectors 3

The board delivers 7.1-channel audio output through three analog audio connectors on the rear I/O. An S/PDIF Out port is not included, so digital optical or coaxial audio output is not available.

Storage:

Supports RAID 1 ✓
Supports RAID 10 (1+0) ✓
Supports RAID 5 ✓
Supports RAID 0 ✓
Supports RAID 0+1 ✕

The board supports RAID 0, 1, 5, and 10 configurations, covering a range of needs from performance striping to mirroring and parity-based redundancy. RAID 0+1 is not supported.

Final Verdict

The Gigabyte B860M E is a focused Micro-ATX motherboard that delivers a solid foundation for Intel LGA 1851 builds where compactness and storage flexibility are priorities. Its support for DDR5 memory with overclocking headroom up to 8800 MHz, combined with dual BIOS and a three-year warranty, gives it a reliable edge for users building stable, long-term systems. The board's limitations — namely the absence of Wi-Fi, Bluetooth, and USB Type-C rear ports — mean it is best matched to wired desktop environments rather than versatile or heavily connected workstations. For users whose needs align with those boundaries, it represents a competent and well-rounded platform within the B860 chipset tier.