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ATX motherboard in white and silver with large VRM heatsinks, M.2 covers and rear I/O shield

ASUS

ASUS ROG Strix B650-A Gaming WiFi & Ryzen 9 9950X Combo AMD Motherboard

SKU CH-BX0M-4FJ5A

A motherboard and CPU bundle pairing an AM5 ATX board with 12+2 power stages, PCIe 5.0 M.2 slot, WiFi 6E and 2.5G LAN alongside a 16-core 32-thread Ryzen 9 9950X reaching 5.7 GHz boost

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) /
  • Maximum Memory Supported128GB

Motherboard ROG Strix B650-A Gaming WiFi

CPU + R9 9950X

  • Ready for next-gen Ryzen CPUs with AM5 socket
  • 16 cores and 32 threads deliver extreme multi-thread speed
  • 12 + 2 power stages ensure stable voltage under load
  • One PCIe 5.0 plus two PCIe 4.0 M.2 slots with heatsinks
  • WiFi 6E and 2.5G LAN provide fast wired and wireless networking

AM5 Combo for Ryzen 9 9950X

This bundle pairs an ASUS ROG Strix B650-A Gaming WiFi motherboard with the AMD Ryzen 9 9950X processor. The board uses the AMD B650 chipset and AM5 socket, supporting Ryzen 7000, 8000 and 9000 series CPUs. The CPU delivers 16 cores and 32 threads based on Zen 5 architecture with a 5.7 GHz max boost clock.

Suits high-core-count builds, not budget systems

Builders who need 16 cores for rendering, compilation or heavy multitasking will benefit from the 12 + 2 power stage design and 8 + 4 pin ProCool connectors. The platform supports up to 128 GB of DDR5 across four slots with EXPO profiles. Users seeking a lower-cost entry point or fewer cores should consider alternative chipsets or processors.

Sustained load handled by massive VRM heatsinks

Under continuous multi-threaded workloads the VRM heatsinks with airflow channels and high-conductivity thermal pads dissipate heat from the power stages. All three M.2 slots (one PCIe 5.0 x4, two PCIe 4.0 x4) include heatsinks to maintain SSD performance during long writes. The 2.5 GbE Intel LAN and WiFi 6E provide stable network throughput for extended transfers.

Highlights

  • Ready for next-gen Ryzen CPUs with AM5 socket
  • 16 cores and 32 threads deliver extreme multi-thread speed
  • 12 + 2 power stages ensure stable voltage under load
  • One PCIe 5.0 plus two PCIe 4.0 M.2 slots with heatsinks
  • WiFi 6E and 2.5G LAN provide fast wired and wireless networking

Specifications

BrandASUS
SeriesROG
ModelROG STRIX B650-A Gaming WiFi+R9 9950X
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors*
* Refer to www.asus.com for CPU support list.
ChipsetAMD B650
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) / 5400(OC) / 5200 / 5000 / 4800
* Supported memory types, data rate(Speed), and number of DRAM module vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.
* Non-ECC, Un-buffered DDR5 Memory supports On-Die ECC function
Maximum Memory Supported128GB
Channel SupportedDual Channel
ECC SupportedYes
Buffer SupportedUn-buffered
Memory FeatureSupports AMD EXTended Profiles for Overclocking (EXPO)
OptiMem II
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x16AMD Ryzen 7000 Series Desktop Processors
1 x PCIe 4.0/3.0 x16 slot
AMD B650 Chipset
1 x PCIe 4.0/3.0 x16 slot (supports x4 mode)*
* PCIe 4.0 x16 slot (supports x4 mode) from AMD B650 Chipset shares bandwidth with M.2_3.
PCI Express x12 x PCIe 4.0/3.0 x1 slots
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD Ryzen 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
AMD B650 Chipset
M.2_3 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4)**
** M.2_3 slot shares bandwidth with PCIe 4.0 x16 slot (supports x4 mode). When PCIEx16_2 slot is operating, M.2_3 will be disabled.
SATA RAIDAMD RAIDXpert2 Technology supports both NVMe RAID 0/1/10 and SATA RAID 0/1/10
Audio ChipsetRealtek ALC4080
Audio ChannelsROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080
- Impedance sense for front and rear headphone outputs
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- High quality 120 dB SNR stereo playback output and 113 dB SNR recording input
- Supports up to 32-Bit/384 kHz playback
Audio Features
- SupremeFX Shielding Technology
- Savitech SV3H712 AMP
- Premium audio capacitors
- Audio cover
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 6E
2x2 Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Supports 2.4/5/6GHz frequency band*
* WiFi 6E 6GHz regulatory may vary between countries, and function will be ready in Windows 11 or later.
BluetoothBluetooth v5.2
Back I/O Ports1 x USB 3.2 Gen 2x2 port (1 x USB Type-C)
4 x USB 3.2 Gen 2 ports (3 x Type-A, 1 x USB Type-C)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi Module
1 x Intel I225-V 2.5Gb Ethernet port
5 x Audio jacks
1 x BIOS FlashBack button
Onboard USB1 x USB 3.2 Gen 2 connector (supports USB Type-C )
1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan headers
Storage related
3 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
Miscellaneous
3 x Addressable Gen 2 header
1 x AURA RGB headers
1 x Clear CMOS header
1 x CPU Over Voltage jumper
1 x Front Panel Audio header (AAFP)
1 x S/PDIF Out header
1 x 20-3 pin System Panel header with Chassis intrude function
1 x Thermal Sensor header
1 x Thunderbolt header
1 x COM_DEBUG header
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
1 x 4-pin +12V Power connector
Windows 11Supported
FeaturesExtreme Engine Digi+
- 5K Black Metallic Capacitors
ASUS Q-Design
- M.2 Q-Latch
- PCIe Slot Q-Release
- Q-DIMM
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
ASUS Thermal Solution
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- ProCool
- Pre-mounted I/O shield
- SafeSlot
- SafeDIMM
AURA Sync
- AURA RGB header
- Addressable Gen 2 headers
Package Contents1 x AMD Ryzen 9 9950X CPU
1 x Shin-Etsu X-23-7868-2D (1.8g)
Cables
2 x SATA 6Gb/s cables
Additional Cooling Kit
1 x Thermal pad for M.2
Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x Cable ties pack
1 x M.2 Q-Latch package
1 x ROG key chain
1 x ROG Strix stickers
1 x ROG Strix thank you card
2 x Rubber Packages for M.2
Documentation
1 x User guide

Other versions of this model

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Questions about this item

What DDR5 memory speed must I already have for the board to run at its rated 6400 MHz?

The motherboard supports DDR5 up to 6400+(OC) with EXPO profiles, so you need DDR5 modules rated at 6400 MT/s or higher to reach that speed.

Will my existing PCIe 3.0 x1 add-in cards work in the two PCIe 4.0/3.0 x1 slots?

Yes, the two PCIe 4.0/3.0 x1 slots are backward compatible with PCIe 3.0 x1 cards, so older add-in cards will function normally.

How can I confirm the M.2_1 slot is running at PCIe 5.0 x4 after I install a drive?

Check the BIOS M.2 configuration screen — it will report the link width and generation for M.2_1, showing PCIe 5.0 x4 when a compatible drive is seated.

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