Gigabyte

B860M H

B860LGA1851Micro ATX

The Gigabyte B860M H is a Micro ATX LGA1851 motherboard on the B860 chipset. It supports DDR5 memory up to 8,800 MT/s and 2 M.2 slots. It's out of stock at the retailers we track right now, but the specs below still apply whenever it returns.

Prices update regularly and may differ at the retailer. This page contains affiliate links.

Gigabyte B860M H motherboard

MaxMyBuild scores

How we score →

How well the B860M H is equipped for gaming and for productivity, scored 0–100 from its specs. Scores are fit-for-purpose: a capable board can top the gaming score without being the most expensive.

53/ 100Gaming

Weighs CPU power delivery, memory speed support, the GPU PCIe slot, Wi-Fi version, and M.2 storage — the things that actually matter for a gaming build.

CPU power6
RAM speed100
GPU slot100
M.278
Wi-Fi0
37/ 100Productivity

Rewards fast, plentiful M.2 storage and USB I/O, PCIe expansion, memory capacity and slots — what matters for content creation and heavy multitasking.

CPU power0
Capacity & slots50
PCIe expansion45
M.2 storage78
USB I/O17

CPU power

136 W

Limited · 0.5x

Wired for about 136 W, roughly 54% of the 250 W that the top Core Ultra 9 chips pull. Pair it with a mid-range processor rather than a flagship. The figure comes from its 4+1+2 power-stage (VRM) layout and 8 EPS connectors. It is a rating of what the board is built to deliver, not a measurement, so treat it as headroom rather than a guarantee.

Specifications

Platform

Chipset
B860
Socket
LGA1851
Form factor
Micro ATX

Memory

Type
DDR5
Slots
2
Max speed
8,800 MT/s
Max capacity
128 GB
Channels
2-channel
ECC / memory
UDIMM, CUDIMM

Power & VRM

CPU power
136 W
Phase config
4+1+2
EPS power
8
VRM heatsink
Full coverage

Storage & Expansion

M.2 slots
2
M.2 layout
2× PCIe 4.0 ×4
SATA ports
4 SATA3
PCIe ×16 slots
1× PCIe 5.0 ×16
Other PCIe slots
1× PCIe 4.0 ×1

Ethernet & Wi-Fi

Realtek RTL8125
2.5 GbE
Ethernet ports
1
Wi-Fi
None

USB & I/O

Rear USB-A
2× USB 2.0, 4× 5 Gbps
Front USB 3 headers
1
Front USB 2 headers
2

Audio & Video

Audio codec
ALC897
Audio jacks
3
HDMI
HDMI 2.1
DisplayPort
None
USB-C video
None

Cooling, RGB & Design

Fan headers
3
5V ARGB headers
2
PCB colour
Black, Light Grey
Heatsink colour
Black, Light Grey

Onboard & Diagnostics

Diagnostics
Debug LEDs
TPM header
Yes

Compare the B860M H against every other board on the motherboard comparison table. Not sure it fits your chip? The socket compatibility guide explains LGA1851 pairings.

Where to buy the B860M H

Every in-stock retailer offer we track, cheapest first.

Currently out of stock

The B860M H isn’t in stock at the retailers we track right now. Prices refresh daily, so check back — or compare other in-stock boards.

Browse in-stock motherboards

Which CPUs fit the B860M H?

Compare all CPUs →

In-stock LGA1851 processors this board can run, socket-matched and within its 136 W power budget, ranked by gaming value (performance per dollar).

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