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Gigabyte B850M AORUS STEALTH motherboard
Gigabyte

Gigabyte B850M AORUS STEALTH

View on gigabyte.com
Chipset:
B850
Socket:
AM5
Form Factor:
Micro-ATX
Network:
WiFi 7

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Manufacturer: Gigabyte Last updated: September 8, 2026

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Gigabyte B850M AORUS STEALTH Review

The Gigabyte B850M AORUS STEALTH, introduced in July 2026, brings Gigabyte's reverse-connector Project STEALTH design to a Micro-ATX form factor for the first time in this generation, following the full-size ATX B850 and X870 STEALTH boards shown earlier in the year. The core concept carries over unchanged at the smaller size: every major connector sits on the back of the board rather than the front, letting cables route behind the tray in a compatible case. This is aimed at small form factor builders who want the same cableless aesthetic the ATX STEALTH boards offer without stepping up to a full-size case.

Gigabyte's specific per-component specifications for this Micro-ATX board weren't broken out in the same detail as the ATX STEALTH models at the time of writing; expect a scaled-down VRM and connectivity set appropriate to the smaller form factor, following the same B850 STEALTH design language as its ATX sibling.

Compatibility and Case Requirements

As with every board in the STEALTH line, this Micro-ATX version requires a case built with matching reverse-connector cutouts and standoffs; a standard Micro-ATX case will not accept the reversed connector layout. Confirm case compatibility specifically for the Micro-ATX form factor before buying, since a case supporting the ATX STEALTH boards doesn't automatically support this smaller version, and vice versa.

Memory and Expansion

Four DDR5 DIMM slots with overclocking support and PCIe 5.0 storage and graphics connectivity carry over from the ATX STEALTH design philosophy, scaled to fit the smaller Micro-ATX footprint with a reduced slot count relative to the full-size ATX boards in the same family.

Design and Build

The reverse-connector layout is identical in concept to the ATX STEALTH boards: cables connect behind the board rather than across its visible face. Fitting this into a Micro-ATX footprint is a genuine engineering challenge Gigabyte hadn't previously solved in this generation, making this board notable specifically for extending the cableless concept into small form factor builds rather than only full-size ATX cases.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • Small form factor builders who want the STEALTH cableless aesthetic
  • Buyers who've confirmed their specific Micro-ATX case supports reverse-connector boards

Not for

  • Anyone building in a full ATX case
  • Buyers needing exact VRM specifications before purchase

Specifications

What these specs mean

Identity

Model NumberGigabyte B850M AORUS STEALTH, Project STEALTH Series
Form FactorMicro-ATX

Platform and CPU compatibility

PlatformAMD
SocketAM5
ChipsetB850
Newest CPU Family SupportedRyzen 9000
Oldest CPU Family SupportedRyzen 7000
CPU Overclocking SupportedYes

Memory

Memory TypeDDR5
Memory Slots4
Max Memory256 GB
Memory Channels2
Max Memory Capacity256 GB
Max Rated Memory Speed8200 MT/s
ECC Memory SupportNone

Expansion & Connectivity

M.2 Slots3
PCIe 5.0 SupportYes
Wi-Fi OnboardYes

Physical fit

Board Width244 mm

M.2 storage

M.2 PCIe 5.0 Slots1
M.2 PCIe 4.0 Slots2
M.2 CPU Attached Slots2

Other storage

SATA Ports2

PCIe expansion

PCIe x16 Slots2
Primary Graphics Slot GenPCIe 5.0

Rear USB

Rear USB 10Gbps Ports2
Rear USB 5Gbps Ports4
Rear USB 2.0 Ports4

Internal headers

Front USB-C Header Speed10Gbps
Fan and Pump Headers4
ARGB Headers3

Power delivery

EPS 12V ConfigurationOne 8-pin

Network and audio

Max Ethernet Speed5 Gbps
Ethernet Port Count1
Wi-Fi StandardWi-Fi 7
Bluetooth Version5.4
Audio CodecRealtek ALC1220

FAQs

What are the key specifications of the Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7)?

Key specs for the Gigabyte B850M AORUS STEALTH: Chipset B850, Socket AM5, Socket Type AM5, Max Memory Capacity 256 GB, Form Factor Micro-ATX, Memory Type DDR5.

Will the Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7) work with my current setup?

The Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7) lists Socket is AM5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7) best suited to?

Best suited to: Small form factor builders who want the STEALTH cableless aesthetic; Buyers who've confirmed their specific Micro-ATX case supports reverse-connector boards.

What are the drawbacks of the Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7)?

Not the best fit for: Anyone building in a full ATX case; Buyers needing exact VRM specifications before purchase.

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