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Green micro-ATX board with silver VRM heatsinks, four DDR5 slots, two M.2 shields, 2.5Gb Ethernet and Wi-Fi 6 antennas

ASUS

ASUS Prime B650M-A AX AMD motherboard

SKU CH-TWET-QD30N

Micro-ATX board for AMD Ryzen 7000 CPUs with DDR5 memory, PCIe 5.0 M.2, Wi-Fi 6 and 2.5Gb Ethernet

  • ProcessorSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Form factorMicro ATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 5600(OC)/5400(OC)/5200/5000/4800 ECC and Non-ECC, Un-bu
  • Ready for Ryzen 7000 series processors with AM5 socket
  • DDR5 memory up to 5600 OC across four slots for 128 GB total
  • PCIe 5.0 M.2 slot enables ultrafast storage performance
  • 5 Gb Ethernet plus Wi-Fi 6 for high-speed wired and wireless networking
  • VRM and PCH heatsinks with hybrid fan headers deliver comprehensive cooling

AMD AM5 Socket Ready for Ryzen 7000

The ASUS Prime B650M-A AX motherboard uses the AMD AM5 socket to support AMD Ryzen 7000 Series desktop processors. It provides four DDR5 memory slots with a maximum capacity of 128GB in dual-channel mode. The board includes one PCIe 5.0 M.2 slot and one PCIe 4.0 M.2 slot for high-speed storage. Connectivity covers Wi-Fi 6, Realtek 2.5Gb Ethernet, USB 3.2 Gen 2 ports and a front USB 3.2 Gen 1 Type-C header.

Sustained Load Behaviour with VRM Heatsink

Comprehensive cooling uses a VRM heatsink and PCH heatsink together with hybrid fan headers controlled by Fan Xpert 2+. This arrangement keeps power delivery stable during extended workloads rather than only in short bursts. ASUS OptiMem II routing preserves signal integrity across the 288-pin DDR5 slots, helping memory run at 5600(OC), 5400(OC), 5200, 5000 or 4800 speeds under continuous demand. Realtek 7.1 audio with shielding maintains clean output during long sessions.

Practical Limits of PCIe 5.0 and Wi-Fi 6

The primary M.2 slot operates at PCIe 5.0 x4 from the CPU, while the second M.2 slot runs at PCIe 4.0 x4 from the chipset. Eight SATA 6Gb/s ports support RAID 0, 1 and 10 alongside PCIe RAID configurations. Wi-Fi 6 uses 2x2 802.11ax on 2.4GHz and 5GHz bands for wireless throughput within the standard's real-world envelope. Video outputs include HDMI and DisplayPort for processors with integrated graphics.

How it compares

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

Price $189.99
Cheaper than about 55% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product linePrime
Model namePRIME B650M-A AX
Part number90MB1CE0-M0AAY0
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)
Max supported RAM128 GB
Memory channelsDual Channel
ECC supportNon-ECC
BufferingUn-buffered
Storage
SATA ports8 x SATA 6Gb/s
M.2 slotsAMD Ryzen 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
AMD B650 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
** The SATA6G_E12/E34 ports cannot support RAID.
SATA and RAID supportAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10
Audio & video
Sound channelsRealtek 7.1 Surround Sound High Definition Audio CODEC*
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Connectivity
Maximum network speed1 x Realtek 2.5Gb Ethernet
Wi-Fi standardWi-Fi 6
2 × 2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Supports 2.4/5 GHz frequency band
Bluetooth supportv5.2
Ports & slots
Onboard USB headers1 x USB 3.2 Gen 1 connector (supports USB Type-C )
1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V Power connector
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Compatibility
Windows 11 supportSupported
In the box
In the boxCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x Screw package for M.2 SSD
Documentation
1 x User guide

Questions about this item

Will my AMD Ryzen 7000 processor fit this motherboard?

Yes, the board uses the AM5 socket that is designed for AMD Ryzen 7000 series desktop processors.

What DDR5 memory speeds can I run with four modules installed?

The board supports DDR5 up to 5600(OC) and 5400(OC) with EXPO profiles, plus standard speeds of 5200, 5000 and 4800 across all four slots.

Can I add a PCIe 5.0 M.2 drive and still keep all eight SATA ports active?

The primary M.2 slot runs at PCIe 5.0 x4 from the CPU, while the chipset provides a second M.2 slot at PCIe 4.0 x4 and eight SATA 6Gb/s ports that remain available.

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