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Sapphire NITRO+ B850M mATX motherboard with Ryzen 9 9900X3D CPU installed

Sapphire Tech

Sapphire Tech NITRO+ B850M WIFI + Ryzen 9 9900X3D AMD motherboard

SKU CH-3EZA-1716R

A compact AM5 motherboard paired with a 12-core 24-thread Zen5 CPU featuring 144MB 3D V-Cache, DDR5 8000+MT/s overclocking, PCIe 5.0 M.2, WiFi 6E, Bluetooth 5.3 and 2.5G LAN

  • CPU socketAM5
  • ChipsetAMD B850
  • HDMI ports1 x HDMI
  • DisplayPort connectors1 x DisplayPort

Cpu + R9 9900X3D

  • 12-core Ryzen 9 9900X3D with 144MB 3D V-Cache drives 2K/4K/8K gaming
  • 12+2+1 phase power delivery and upgraded heatsinks sustain peak CPU loads
  • PCIe 5.0 M.2, WiFi 6E, Bluetooth 5.3 and 2.5G LAN enable fast storage and lag-free play
  • AM5 platform supports Ryzen 7000/8000/9000 series with DDR5 8000+ MT/s overclocking
  • Compact mATX design fits most cases with pre-validated plug-and-play setup

Sapphire NITRO+ B850M WIFI AM5 combo

This bundle pairs a Sapphire NITRO+ B850M WIFI motherboard with an AMD Ryzen 9 9900X3D 12-core 24-thread Zen5 processor. The CPU features 144MB of 3D V-Cache designed for high-frame-rate gaming and multi-threaded workloads. The mATX board uses the AMD B850 chipset and AM5 socket. It targets enthusiasts building a compact high-performance system.

Check AM5 cooler clearance and DDR5 kit speed

Verify that your CPU cooler fits the AM5 mounting pattern and clears the board's 12+2+1 phase VRM heatsinks. The four DDR5 slots support up to 192GB total capacity and EXPO or XMP profiles up to 8000 MT/s. Confirm your memory kit is on the vendor QVL for the rated speed. Rear I/O includes HDMI, DisplayPort, 2.5G LAN, WiFi 6E and Bluetooth 5.3 antennas.

12+2+1 phase VRM handles sustained flagship loads

The robust power delivery keeps the 12-core 9900X3D stable during prolonged full-load sessions such as rendering or extended gaming. Upgraded heatsinks dissipate heat from the VRM and the PCIe 5.0 M.2 slot under continuous throughput. Dual-channel DDR5 bandwidth and PCIe 5.0 graphics throughput remain consistent without thermal throttling.

How it compares

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

Price $922.99
Pricier than about 84% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameSAPPHIRE
Model nameNITRO+ B850M WIFI+(R9 9900 × 3D)
Processor
CPU socketAM5
ChipsetAMD B850
Ports & slots
HDMI ports1 x HDMI
DisplayPort connectors1 x DisplayPort

Other versions of this model

4 more in the same range

Questions about this item

What comes in the Sapphire NITRO+ B850M WIFI combo box and what must I buy separately?

The combo includes the mATX motherboard and the Ryzen 9 9900X3D 12-core 24-thread processor. You must add DDR5 memory modules, a graphics card, storage drives, a CPU cooler, a power supply and a case.

How do I decide between the memory speeds and capacities this board supports?

The board has four DDR5 slots and runs up to 8000 MT/s when overclocked. Maximum capacity is 192 GB using 48 GB modules. Choose EXPO or XMP kits rated for your target speed and capacity.

What does the 144 MB 3D V-Cache figure mean for real-world gaming?

The 144 MB 3D V-Cache on the 12-core 9900X3D reduces latency for game data, lifting frame rates at 2K, 4K and 8K resolutions while the 24 threads handle heavy multi-thread workloads.

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