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ATX motherboard in white and silver with large VRM heatsinks, AM5 socket, four DDR5 slots, three M.2 heatsinks

ASUS

ASUS ROG Strix B650-A Gaming WiFi & Ryzen 9 9950X3D AMD motherboard CPU combo

SKU CH-HFCT-REANF

AM5 motherboard and 16-core Ryzen 9 9950X3D CPU combo with 128 MB L3 cache, DDR5 support, PCIe 5.0 M.2, WiFi 6E and 2.5G LAN

  • 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 9950X3D

  • Powerful Ryzen 9 9950X3D with 128 MB L3 cache for heavy workloads
  • 12 + 2 power stages deliver stable voltage to high-core-count CPUs
  • Massive VRM heatsinks with airflow channels keep temperatures under load
  • One PCIe 5.0 M.2 slot plus two PCIe 4.0 M.2 slots all heatsinked
  • WiFi 6E and Intel 2.5G Ethernet provide fast wired and wireless networking

Combo for AM5 multi-core builds

This motherboard and CPU pair targets enthusiasts who need high thread counts on the AM5 platform. The board uses the AMD B650 chipset and ships with a Ryzen 9 9950X3D processor already included. Four DDR5 slots support up to 128GB of memory with EXPO profiles. The combination suits workstations and gaming rigs that demand sustained multi-core throughput.

Power delivery under sustained load

The board employs 12 + 2 power stages fed by 8 + 4 pin ProCool connectors with alloy chokes and durable capacitors. Massive VRM heatsinks with cut airflow channels and high conductivity thermal pads dissipate heat during prolonged all-core workloads. This design keeps voltage regulation stable when the 170W processor runs heavy compute tasks for extended periods.

Build quality and daily connectivity

Three M.2 slots each carry a heatsink, with the top slot running at PCIe 5.0 x4 and two others at PCIe 4.0 x4. Rear I/O provides one USB 3.2 Gen 2x2 Type-C port, eight additional USB ports, HDMI 2.1 and DisplayPort 1.4 outputs. Networking uses on-board WiFi 6E and Intel 2.5G Ethernet with LANGuard. The primary PCIe 5.0 x16 SafeSlot secures heavy graphics cards.

Points forts

  • Powerful Ryzen 9 9950X3D with 128 MB L3 cache for heavy workloads
  • 12 + 2 power stages deliver stable voltage to high-core-count CPUs
  • Massive VRM heatsinks with airflow channels keep temperatures under load
  • One PCIe 5.0 M.2 slot plus two PCIe 4.0 M.2 slots all heatsinked
  • WiFi 6E and Intel 2.5G Ethernet provide fast wired and wireless networking

Caractéristiques

BrandASUS
SeriesROG
ModelROG STRIX B650-A Gaming WiFi+R9 9950X3D
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 9950X3D 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

How much heat does the 170W Ryzen 9 9950X3D push into the case when all 16 cores run at full load for hours?

The CPU is rated at 170W TDP. The board uses 12 + 2 power stages with 8 + 4 pin ProCool connectors, massive VRM heatsinks, cut airflow channels and high-conductivity thermal pads to move that heat away from the socket.

Which DDR5 memory kit must I already have so the board posts and runs at 6400+(OC)?

You need a DDR5 kit that supports AMD EXPO profiles; the board has four 288-pin slots, dual-channel topology, OptiMem II layout and validates speeds up to 6400+(OC) with compatible modules.

Will my existing PCIe 4.0 x4 NVMe drive work in the second M.2 slot without losing lanes to the chipset x16 slot?

The second M.2 slot runs PCIe 4.0 x4 from the CPU. The chipset x16 slot shares bandwidth only with the third M.2 slot, so the second slot keeps full x4 speed regardless of what occupies the chipset slot.

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