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ATX motherboard with silver heatsinks and black PCB

GIGABYTE

GIGABYTE B850 AORUS STEALTH AMD motherboard, AM5, DDR5, four M.2, PCIe 5.0, USB-C, WIFI7

SKU CH-57S8-X93GA MPN B850 AORUS STEALTH

ATX board for AM5 Ryzen CPUs with four DDR5 slots up to 256 GB, one PCIe 5.0 x16 slot, four M.2 sockets, 5 GbE LAN and WIFI7

  • CPU Socket TypeAM5
  • CPU TypeRyzen 9000 Series, Ryzen 8000 Series, Ryzen 7000 Series
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardSupport for DDR5 8200(O.C) / 8000(O.C) / 7950(O.C) / 7900(O.
  • Maximum Memory Supported256GB
  • Supports Ryzen 9000, 8000 and 7000 series CPUs on AM5 socket
  • Four M.2 slots accept PCIe 5.0 and 4.0 drives for fast storage
  • 5 GbE LAN plus WIFI7 give high-speed wired and wireless networking
  • DDR5 memory overclocks to 8200 MT/s with AMD EXPO profiles
  • 14+2+2 phase digital VRM delivers stable power for high-end processors

AM5 Platform for Ryzen 9000 8000 7000 Series

The GIGABYTE B850 AORUS STEALTH is an ATX motherboard built for AMD Socket AM5 processors. It accepts Ryzen 9000 Series, Ryzen 8000 Series and Ryzen 7000 Series CPUs. The board targets enthusiasts who want high-speed DDR5 memory and extensive M.2 storage in a standard form factor.

256GB Dual Channel DDR5 up to 8200MT/s

Four 288-pin slots support up to 256GB of dual-channel DDR5 with AMD EXPO and Intel XMP profiles. Speeds range from 4400 to 8200MT/s when overclocked. Four M.2 sockets accept PCIe 5.0 x4 and PCIe 4.0 x4 drives, while two SATA 6Gb/s ports handle additional storage. RAID 0 1 5 10 is available for NVMe on Ryzen 9000 Series, with RAID 0 1 for SATA.

PCIe 5.0 x16 Graphics Slot 5GbE LAN and WIFI7

A single PCI Express 5.0 x16 slot runs at full width with Ryzen 9000 and 7000 Series, dropping to x8 or x4 with Ryzen 8000 Series. The slot supports a graphics card or an NVMe SSD. Networking uses a Realtek 5GbE controller plus WIFI7. Audio is handled by a Realtek ALC1220 codec with 2 4 5.1 7.1-channel output.

Highlights

  • Supports Ryzen 9000, 8000 and 7000 series CPUs on AM5 socket
  • Four M.2 slots accept PCIe 5.0 and 4.0 drives for fast storage
  • 5 GbE LAN plus WIFI7 give high-speed wired and wireless networking
  • DDR5 memory overclocks to 8200 MT/s with AMD EXPO profiles
  • 14+2+2 phase digital VRM delivers stable power for high-end processors

Specifications

BrandGIGABYTE
SeriesAORUS
ModelB850 AORUS STEALTH
CPU Socket TypeAM5
CPU TypeRyzen 9000 Series, Ryzen 8000 Series, Ryzen 7000 Series
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Memory StandardSupport for DDR5 8200(O.C) / 8000(O.C) / 7950(O.C) / 7900(O.C) / 7800(O.C) / 7600(O.C.) / 7400(O.C.) / 7200(O.C.) / 7000(O.C.) / 6800(O.C.) / 6600(O.C.) / 6400(O.C) / 6200(O.C) / 6000(O.C) / 5800(O.C) / 5600(O.C) / 5200 / 4800 / 4400 MT/s memory modules.
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO / Intel XMP
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 5.0 x161 x PCI Express x16 slot (PCIEX16), integrated in the CPU:
AMD Ryzen 9000/7000 Series Processors support PCIe 5.0 x16 mode
AMD Ryzen 8000 Series-Phoenix 1 Processors support PCIe 4.0 x8 mode
AMD Ryzen 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4 mode
The PCIEX16 slot can only support a graphics card or an NVMe SSD. If only one graphics card is to be installed, be sure to install it in the PCIEX16 slot.
Chipset:
1 x PCI Express x16 slot, supporting PCIe 4.0 and running at x4 (PCIEX4)
The PCIEX4 slot shares bandwidth with the M2D_SB connector. The PCIEX4 slot becomes unavailabl
Serial ATA (SATA)2 x SATA 6Gb/s
M.24 x M.2 (Support PCIe 5.0 x4 & PCIe 4.0 x4)
SATA RAIDRAID 0, RAID 1, RAID 5, and RAID 10 support for NVMe SSD storage devices
RAID 5 is only available on AMD Ryzen 9000 Series Processors.
RAID 0 and RAID 1 support for SATA storage devices
Audio ChipsetRealtek ALC1220
Audio Channels2/4/5.1/7.1-channel
You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings.
LAN ChipsetRealtek 5GbE
Max LAN Speed5Gbps
Wireless LANRealtek Wi-Fi 7 RTL8922AE
WIFI a, b, g, n, ac, ax, supporting 2.4/5/6 GHz carrier frequency bands
BluetoothBluetooth 5.4
Back I/O Ports1 x HDMI port (Note)
2 x antenna connectors (2T2R)
1 x USB Type-C header, with USB 3.2 Gen 2 support
2 x USB 3.2 Gen 2 Type-A ports (red)
4 x USB 3.2 Gen 1 ports
4 x USB 2.0/1.1 ports
1 x RJ-45 port
1 x optical S/PDIF Out connector
2 x audio jacks
(Note) Actual support may vary by CPU.
HDMI1 x HDMI
Audio Ports2 Ports
Onboard USB1 x USB Type-C® header, with USB 3.2 Gen 2x2 + 1 x USB 3.2 Gen 1 header + 2 x USB 2.0/1.1 headers
Other Connectors1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x 4-pin ATX 12V power connector
1 x CPU fan header
1 x CPU fan/water cooling pump header
4 x system fan headers
2 x system fan/water cooling pump headers
3 x addressable RGB Gen2 LED strip headers
1 x RGB LED strip header
4 x M.2 Socket 3 connectors
1 x front panel header
1 x front panel audio header
1 x noise detection header
1 x Trusted Platform Module header (For the GC-TPM2.0 SPI V2 module only)
1 x Q-Flash Plus button
1 x power button
1 x reset button
1 x reset jumper
2 x temperature sensor headers
1 x Clear
Form FactorATX
LED LightingRGB
Dimensions (W x L)30.5cm x 24.4cm
BIOS Feature1 x 512 Mbit flash
Use of licensed AMI UEFI BIOS
PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Windows 11Supported
Shipping weight3.63 kg
Package size338 × 312 × 94 mm

Questions about this item

Will my existing DDR5 6000 MT/s modules run at rated speed on the B850 AORUS STEALTH?

The board supports DDR5 speeds from 4400 up to 8200 MT/s with overclocking, so 6000 MT/s modules will operate at their rated frequency when AMD EXPO or Intel XMP profiles are enabled in BIOS.

How can I confirm the PCIe 5.0 x16 slot is running at full speed after installing a Ryzen 9000 CPU and graphics card?

With a Ryzen 9000 or 7000 series processor the PCIEX16 slot operates in PCIe 5.0 x16 mode; verify the link width and generation in GPU-Z or the motherboard BIOS hardware monitor.

What comes in the box with the B850 AORUS STEALTH and which key items must I purchase separately?

The motherboard includes the ATX board, I/O shield, SATA cables, M.2 screws and driver disc; you must buy a compatible AM5 CPU, DDR5 memory, storage drives and a graphics card separately.

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