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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

  • ProcessorSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) /

Motherboard ROG Strix B650-A Gaming WiFi

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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.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $1,035.99
Pricier than about 90% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Product lineROG
Model nameROG STRIX B650-A Gaming WiFi+R9 9950 × 3D
Processor
ProcessorSupports AMD Ryzen 7000 Series Desktop Processors*
* Refer to www.asus.com for CPU support list.
CPU socketAM5
ChipsetAMD B650
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryDDR5 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
Max supported RAM128 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
SATA and RAID supportAMD RAIDXpert2 Technology supports both NVMe RAID 0/1/10 and SATA RAID 0/1/10
Audio & video
Audio chipRealtek ALC4080
Sound 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
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 6E
2 × 2 Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Supports 2.4/5/6 GHz frequency band*
* WiFi 6E 6 GHz regulatory may vary between countries, and function will be ready in Windows 11 or later.
Bluetooth supportv5.2
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe x1 slots2 x PCIe 4.0/3.0 x1 slots
Onboard USB headers1 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
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V Power connector
1 × 4-pin +12 V Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported

Other versions of this model

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Questions about this item

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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