GIGABYTE B850 AORUS STEALTH ICE ATX AM5 DDR5 Motherboard — Wi‑Fi 7, PCIe 5.0 x16, PCIe 5.0 M.2, multiple M.2 slots with Thermal Guard, 2.5GbE LAN, USB‑C 20Gbps, Q‑Flash Plus, stealth cable‑routing design

GIGABYTE B850 A Stealth Ice Motherboard

Model: B850 A Stealth Ice
Form Factor: ATX (30.5 cm x 24.4 cm)
Warranty: Typically 3 years (varies by region)

CPU Support

• Socket: AM5
• Supported Processors:
  • AMD Ryzen™ 9000 Series
  • AMD Ryzen™ 8000 Series
  • AMD Ryzen™ 7000 Series
• Note: Check GIGABYTE's website for the latest CPU support list.

Chipset

• AMD B850 Chipset
• PCIe Support:
  • PCIe 5.0 for Ryzen 9000/7000 Series
  • PCIe 4.0 for Ryzen 8000 Series

Memory

• Slots: 4 x DDR5 DIMM sockets
• Max Capacity: 256 GB (64 GB per module)
• Speed Support:
  • Up to 8200 MT/s (OC)
  • JEDEC speeds: 5200 / 4800 / 4400 MT/s
• Dual-Channel Architecture: Yes
• Memory Types:
  • Non-ECC Un-buffered DIMMs (1Rx8/2Rx8/1Rx16)
  • AMD EXPO™ & XMP Support
• Note: Actual memory speed depends on CPU and configuration.

Onboard Graphics

• Integrated GPU: AMD Radeon™ Graphics
• Display Output:
  • 1 x HDMI port
  • Max Resolution: 4096x2160@60Hz
  • HDMI 2.1 Support: Yes (HDR, HDCP 2.3)
• Note: Graphics specs vary by CPU.

Audio

• Codec: Realtek® ALC1220
• Channels: 2/4/5.1/7.1
• S/PDIF Out: Yes
• DSD Audio: Supported via back panel jack

LAN

• Chipset: Realtek® 5GbE LAN
• Speeds: 5 Gbps / 2.5 Gbps / 1 Gbps / 100 Mbps

Wireless Communication

• Wi-Fi: Realtek® Wi-Fi 7 RTL8922AE
  • Bands: 2.4 GHz / 5 GHz / 6 GHz
  • Standards: 802.11a/b/g/n/ac/ax
  • Bluetooth: 5.4
  • Wi-Fi 7 Features:
    • 11be 160MHz
    • Windows 11 SV3 Required (No support for Windows 10)
• Note: 6 GHz band availability depends on regional regulations.

Expansion Slots

• PCIe x16 (CPU):
  • Ryzen 9000/7000: PCIe 5.0 x16
  • Ryzen 8000 Phoenix 1: PCIe 4.0 x8
  • Ryzen 8000 Phoenix 2: PCIe 4.0 x4
  • Note: Only one device (GPU or NVMe SSD) can use this slot.
• PCIe x16 (Chipset): PCIe 4.0 x4 (shared with M2D_SB)

Storage

• M.2 Slots:
  • M2A_CPU (CPU):
    • Ryzen 9000/7000: PCIe 5.0 x4/x2
    • Ryzen 8000 Phoenix 1: PCIe 4.0 x4/x2
  • M2B_CPU (CPU):
    • Ryzen 9000/7000: PCIe 5.0 x4/x2
    • Ryzen 8000 Phoenix 1: PCIe 4.0 x4/x2
    • Note: M2B_CPU unavailable with Ryzen 8000 Phoenix 2.
  • M2C_SB & M2D_SB (Chipset): PCIe 4.0 x4/x2
• SATA Ports: 2 x SATA 6Gb/s
• RAID Support:
  • NVMe: RAID 0, 1, 5, 10 (Ryzen 9000 only)
  • SATA: RAID 0, 1

USB

• CPU-Integrated:
  • 1 x USB Type-C® (USB 3.2 Gen 2)
  • 4 x USB 3.2 Gen 1 (Back Panel)
  • 4 x USB 2.0/1.1 (Back Panel)
• Chipset-Integrated:
  • 1 x USB Type-C® (USB 3.2 Gen 2x2)
  • 2 x USB 3.2 Gen 2 Type-A (Red)
  • 2 x USB 3.2 Gen 1 (Internal)
  • 4 x USB 2.0/1.1 (Internal)

Internal I/O Connectors

• Power:
  • 1 x 24-pin ATX main
  • 1 x 8-pin CPU
  • 1 x 4-pin CPU fan/water pump
• Fans:
  • 4 x system fan headers
  • 2 x pump headers
• RGB:
  • 3 x Addressable Gen2 RGB headers
  • 1 x RGB LED header
• Storage:
  • 4 x M.2 slots
  • 2 x SATA 6Gb/s
• Audio/Control:
  • 1 x front panel audio
  • 1 x front panel header
  • 1 x Q-Flash Plus button
  • 1 x power/reset buttons
  • 1 x Clear CMOS jumper
  • 1 x TPM header
  • 2 x temperature sensors

Back Panel I/O

• Video:
  • 1 x HDMI
  • 2 x antenna connectors (2T2R)
• USB:
  • 2 x USB 3.2 Gen 2 Type-A (Red)
  • 4 x USB 3.2 Gen 1
  • 4 x USB 2.0/1.1
• Networking:
  • 1 x RJ-45 (5GbE)
• Audio:
  • 1 x optical S/PDIF Out
  • 2 x audio jacks

BIOS & Software

• Flash Memory: 512 Mbit
• BIOS Type: AMI UEFI BIOS
• Supported Standards:
  • PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
• Bundled Software:
  • Norton® Internet Security (OEM)
• Operating System: Windows 11 64-bit

Unique Features

• GIGABYTE Control Center (GCC):
  • Smart Backup
  • Q-Flash & Q-Flash Plus
• Hardware Monitoring:
  • Voltage, temperature, fan speed detection
  • Fan speed control (depends on installed fans)