Gigabyte B840 Micro ATX Motherboard – Specifications

CPU Support

• AMD Socket AM5

• Compatible with:

  • AMD Ryzen™ 9000 Series

  • AMD Ryzen™ 8000 Series

  • AMD Ryzen™ 7000 Series

• (Check Gigabyte support list for latest CPUs)

---

Chipset

• AMD B840

---

Memory

• 2 × DDR5 DIMM sockets, up to 128GB (64GB per DIMM)

• Dual-channel architecture

• Supported speeds: DDR5 7600(O.C.) → 4400 MT/s

• Supports AMD EXPO™ and Intel XMP profiles

• Supports non-ECC unbuffered DIMM

---

Graphics (Integrated, CPU dependent)

• 1 × DisplayPort 1.4 – up to 3840×2160 @144Hz, HDR

• 1 × HDMI 2.1 – up to 4096×2160 @60Hz, HDR, HDCP 2.3

---

Audio

• Realtek® Audio CODEC

• High Definition Audio, 2/4/5.1/7.1 channel (configurable via software)

---

Networking

• LAN: Realtek® 2.5GbE (2.5G/1G/100M)

• Wi-Fi: Realtek® Wi-Fi 6 RTL8851BE

  • Supports 2.4/5 GHz, 11ax (80MHz)

  • Bluetooth® 5.3

---

Expansion Slots

• 1 × PCIe x16 (CPU):

  • Ryzen™ 9000/7000 → PCIe 4.0 x16

  • Ryzen™ 8000 Phoenix 1 → PCIe 4.0 x8

  • Ryzen™ 8000 Phoenix 2 → PCIe 4.0 x4

• 1 × PCIe x16 (Chipset): PCIe 3.0 x4

---

Storage

• M.2 Slots:

  • 1 × PCIe 4.0 x4/x2 (CPU)

  • 1 × PCIe 3.0 x2 (Chipset)

• SATA: 4 × SATA 6Gb/s

• RAID Support:

  • NVMe SSD: RAID 0/1/5/10 (RAID 5 only on Ryzen 9000)

  • SATA: RAID 0/1/10

---

USB Connectivity

• Back Panel:

  • 2 × USB 3.2 Gen 1

  • 4 × USB 2.0

• Internal:

  • 1 × USB Type-C® (USB 3.2 Gen 1)

  • 2 × USB 3.2 Gen 1

  • 4 × USB 2.0

---

Internal Connectors

• 24-pin ATX + 8-pin CPU power

• CPU fan + pump headers

• System fan + pump headers

• 2 × ARGB Gen2 headers

• 1 × RGB header

• 2 × M.2 sockets

• 4 × SATA 6Gb/s

• Front panel + audio headers

• TPM header

• Reset jumper, Clear CMOS jumper

---

Back Panel I/O

• 1 × PS/2 combo port

• 4 × USB 2.0

• 2 × USB 3.2 Gen 1

• 1 × HDMI 2.1

• 1 × DisplayPort 1.4

• 1 × RJ-45 2.5GbE

• 2 × Wi-Fi antenna connectors

• 3 × Audio jacks

• Q-Flash Plus button

---

Other Features

• Gigabyte Control Center (GCC)

• Q-Flash & Q-Flash Plus

• Smart Backup

• Norton® Internet Security (OEM)

---

Form Factor

• Micro ATX (24.4 × 24.4 cm)