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ASUS ROG Strix B650-A motherboard with Ryzen 9 9900X CPU installed, black ATX board with silver VRM heatsinks and silver I/O shield

ASUS

ASUS ROG Strix B650-A Gaming WiFi AMD motherboard & Ryzen 9 9900X combo

SKU CH-V8MQ-MNSN6

Bundled AM5 motherboard with 12 + 2 power stages, PCIe 5.0 M.2 slot, WiFi 6E and a 12-core 24-thread Ryzen 9 9900X reaching 5.6 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 9900X

  • 12 cores and 24 threads handle heavy workloads with the Ryzen 9 9900X
  • 12 + 2 power stages deliver stable voltage to multi-core processors
  • One PCIe 5.0 and two PCIe 4.0 M.2 slots with heatsinks enable fast storage
  • WiFi 6E and 2.5G LAN provide high-speed wired and wireless networking
  • Four DDR5 slots support up to 128GB with EXPO profiles for memory overclocking

AM5 Platform with Ryzen 9 9900X

This combo pairs a ROG Strix B650-A Gaming WiFi motherboard with a 12-core Ryzen 9 9900X processor. The AM5 socket supports 7000, 8000 and 9000 series CPUs, while the board delivers 12 plus 2 power stages and 8 plus 4 pin ProCool connectors for multi-core workloads. Builders targeting high-throughput gaming or content creation get a ready-matched platform.

Straightforward ATX Install with One BIOS Caveat

The board follows standard ATX mounting and uses familiar 288-pin DDR5 slots, 4.0 and 5.0 M.2 sockets with pre-fitted heatsinks, plus 2.5G LAN and WiFi 6E built in. A BIOS update may be required before the 9900X will post, so plan a USB flash update if the board ships on an older revision. Clear the CMOS button on the rear I/O if the first boot stalls.

Sustained Load Handling on 12 Plus 2 Stages

Massive VRM heatsinks with cut airflow channels and high-conductivity thermal pads keep the 12 plus 2 power stages cool during extended all-core boosts at 5.6 GHz. Dual-channel DDR5 up to 6400 MT/s EXPO and three heatsinked M.2 slots — one 5.0 x4 and two 4.0 x4 — maintain throughput without thermal throttling during long renders or compiles.

Points forts

  • 12 cores and 24 threads handle heavy workloads with the Ryzen 9 9900X
  • 12 + 2 power stages deliver stable voltage to multi-core processors
  • One PCIe 5.0 and two PCIe 4.0 M.2 slots with heatsinks enable fast storage
  • WiFi 6E and 2.5G LAN provide high-speed wired and wireless networking
  • Four DDR5 slots support up to 128GB with EXPO profiles for memory overclocking

Caractéristiques

BrandASUS
SeriesROG
ModelROG STRIX B650-A Gaming WiFi+R9 9900X
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 9900X 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

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Questions sur cet article

Will the motherboard need a BIOS update before I can use the included Ryzen 9 9900X?

The board ships ready for Ryzen 7000 series, but the 9000 series may require a BIOS update. The CPU is already in the box so you can update using the board's USB BIOS FlashBack feature without an older processor.

What DDR5 memory speeds can I run stably with this CPU and board combination?

The motherboard supports DDR5 from 4800 up to 6400+(OC) and AMD EXPO profiles. The Ryzen 9 9900X memory controller handles 5600 natively; faster kits work when EXPO is enabled in BIOS.

How many M.2 drives can I install and which slot gives PCIe 5.0 speed?

Three M.2 slots are available, all with heatsinks. The top slot (M.2_1) runs at PCIe 5.0 x4 from the CPU, while the second and third slots run at PCIe 4.0 x4 from the CPU and chipset respectively.

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