We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Micro-ATX board with rear-mounted connectors and black heatsinks

MSI

MSI B650M PROJECT ZERO AMD motherboard

SKU CH-303Y-90TGM MPN B650M PROJECT ZERO

AM5 micro-ATX board with back-connect design, four DDR5 slots up to 128 GB, dual PCIe 4.0 M.2, 2.5 Gb LAN, Wi-Fi 6E and Bluetooth 5.3

  • ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B650
  • Form factorMicro ATX (Back Connect)
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryMemory Support DDR5 7600+(OC)/ 7400(OC)/ 7200(OC)/ 7000(OC)/

Model B650M PROJECT ZERO

  • Back-connect layout clears the front for easier cable routing
  • Supports Ryzen 7000, 8000 and 9000 series processors on AM5
  • DDR5 memory up to 7600 MHz overclocked with AMD EXPO profiles
  • Two M.2 slots each wired for PCIe 4.0 x4 from the CPU
  • Wi-Fi 6E and Bluetooth 5.3 built in with 2.5 Gbps LAN

Back-Connect mATX Board for Ryzen AM5

The MSI B650M PROJECT ZERO is a Micro-ATX motherboard built for AMD Ryzen 7000, 8000 and 9000 series processors on the AM5 socket. Its defining feature moves power, fan and header connectors to the rear of the PCB, giving a clean front view and simpler cable routing. The board uses the AMD B650 chipset and requires a compatible back-connect case.

Installation Notes and Common Issues

The back-connect layout changes where cables attach, so builders must follow the manual closely to avoid missed connections. A BIOS update may be required before installing a Ryzen 9000 series CPU. Four DDR5 slots support up to 128 GB with AMD EXPO profiles. The pre-installed Wi-Fi 6E module occupies the M.2 Key-E slot.

Deciding Specification — Back-Connect Form Factor

This board only fits cases designed for the back-connect Micro-ATX standard. If your case uses traditional front-mounted headers, the connectors will not reach. Verify case compatibility before purchase.

How it compares

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

Price $120.99
Cheaper than about 69% 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 nameMSI
Model nameB650M PROJECT ZERO
Processor
ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
CPU socketAM5
ChipsetAMD B650
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryMemory Support DDR5 7600+(OC)/ 7400(OC)/ 7200(OC)/ 7000(OC)/ 6800(OC)/ 6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600(OC)/ 5400(OC)/ 5200(OC)/ 5000(OC)/ 4800(JEDEC) MHz
Max. overclocking frequency:
- 1DPC 1R Max speed up to 7600+ MHz
- 1DPC 2R Max speed up to 6400+ MHz
- 2DPC 1R Max speed up to 6400+ MHz
- 2DPC 2R Max speed up to 5400+ MHz
Max supported RAM128 GB
Memory profilesAMD EXPO
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots2x M.2
M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
Audio & video
Audio chipRealtek ALC897 Codec
7.1-Channel High Definition Audio
Supports S/PDIF output
Supports up to 32-Bit/384 kHz playback on front panel
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek RTL8125BG 2.5 Gbit/s LAN
Maximum network speed2.5 Gbit/s
Wi-Fi standardAMD Wi-Fi 6E
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX
Supports 20 MHz, 40 MHz, 80 MHz bandwidth in 2.4 GHz/ 5 GHz or 6 GHz* bands
Supports 802.11 a/ b/ g/ n/ ac/ ax
* Wi-Fi 6E 6 GHz may depend on every country’s regulations and will be ready in Windows 11.
Bluetooth supportSupports Bluetooth 5.3**
** Bluetooth 5.3 will be ready in Windows 10 build 21H1 and Windows 11.
Ports & slots
PCIe 4.0 x16 slots1x PCI-E x16 slot
PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)
PCIe x1 slots1x PCI-E x1 slot
PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
Onboard USB headers4x USB 2.0 ports
2x USB 3.2 Gen1 Type A ports
1x USB 3.2 Gen2 Type C ports
Power
Power connectors1x Power Connector(ATX_PWR)
2x Power Connector(CPU_PWR)
Size & build
Form factorMicro ATX (Back Connect)
Width and length9.6 in × 9.6 in
Shipping weight1.57 kg
Package size279 × 272 × 79 mm
Compatibility
Windows 11 supportSupported

Other versions of this model

1 more in the same range

Questions about this item

How can I verify the board is running my Ryzen 7000 CPU and DDR5 memory at the intended speeds after assembly?

Enter the BIOS and confirm the CPU model is detected and the memory shows the EXPO profile active at the rated frequency such as 6000 or 7600 MHz.

What connectors and accessories are included in the box and what must I source separately for a complete build?

The box contains the motherboard with the Wi-Fi 6E module pre-installed in the Key-E M.2 slot, I/O shield, SATA cables and manuals; you must buy a compatible back-connect Micro-ATX case, DDR5 modules, an AM5 CPU cooler, graphics card, storage drives and power supply.

Which memory kit capacity should I choose given the four slots and 128 GB maximum?

For 128 GB total populate all four slots with 32 GB modules; for 64 GB use either two 32 GB sticks or four 16 GB sticks; 32 GB kits work with two 16 GB modules leaving room to expand later.

More in Motherboards for AMD CPUs

Similar items