ASUS PRIME B650M-A AX II Motherboard

ASUS PRIME B650M-A AX II

Brand
ASUS
Model
PRIME B650M-A AX II
$142–$157estimated range · from catalog price Oct 19, 2026Seen 12% off

ASUS Prime B650M-A AX II: mATX AM5 B650 board with DDR5, Wi‑Fi 6, 2.5GbE and a CPU‑dependent PCIe 5.0 M.2; a solid mainstream pick for budget AM5 builds.

TierMainstream?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
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SocketAM5
ChipsetB650
MemoryDDR5
Max RAM speed6400 MHz
Form factormATX
RAM slots4
M.2 slots2
PCIe x162
GixCore Editorial

Product overview

Available by June 2024, the ASUS Prime B650M‑A AX II is a micro‑ATX AM5 board in the Prime B650 family for Ryzen 7000/8000/9000 processors, offering DDR5 support, Wi‑Fi 6, 2.5 GbE, and two M.2 slots with the primary slot capable of PCIe 5.0 when paired with the right CPU.Sourcedlcdnets.asus.com

Positioned as a mainstream B650 option, it exists to deliver a sensible‑cost AM5 platform with up‑to‑date connectivity in a compact mATX layout. It’s well‑suited to budget AM5 builds, expansion/multi‑M.2 storage, first‑time builders, and high‑speed memory via EXPO profiles. Not discontinued as of Oct 19, 2026.Sourceasus.com

Best for
  • budget AM5/LGA1700 builds
  • expansion/multi-M.2
  • first-time builders
  • high-speed memory
Official product specifications
Pairing fit

Compatible CPUs

Compatible options ranked for this part's performance class.

Pairing fit

Compatible RAM kits

Compatible options ranked for this part's performance class.

Pairing fit

Compatible Cases

Compatible options ranked for this part's performance class.

Pairing fit

Compatible Power supplies

Compatible options ranked for this part's performance class.

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the motherboards catalog
Current modelCatalog models
Max RAM speed6400 MHz
Higher than 53% of motherboards
RAM slots4
Higher than 97% of motherboards
M.2 slots2
Higher than 49% of motherboards
Socket
AM5
Memory
DDR5
WiFi
Yes
Integrated Graphics
Yes
USB
3.2
Max Memory Size
128 GB
ECC Support
Yes
Chipset
B650
Max RAM speed
6400 MHz
Form factor
mATX
RAM slots
4
M.2 slots
2
PCIe x16
2
Processor Generation
9000, 8000, 7000
Pci E
5.0
M.2 drives
PCIe
Sata Slots
4
Sata Speed
6 Gb/s
Pci E Slots
4
Tdp
50 W
NVMe support
Yes
Pci E X1
2
Cpu Brand
AMD