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Micro-ATX motherboard with CPU, dark heatsinks and WiFi antenna

ASUS

ASUS TUF GAMING B550M-PLUS WIFI II AMD motherboard and Ryzen 7 5800X3D processor

SKU CH-CHG1-7AH73

Micro-ATX B550 board with WiFi 6 and 2.5 Gb LAN paired with an 8-core Ryzen 7 5800X3D at 3.4 GHz, 105 W TDP, supporting DDR4 up to 4866 MT/s and PCIe 4.0 x4 M.2

  • CPU socketAM4
  • ChipsetAMD B550
  • Form factorMicro ATX
  • Memory slot count4 × 288pin (DDR4)
  • Supported memoryDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
  • Max supported RAM128 GB
  • 8-core 3.4 GHz Ryzen 7 5800X3D processor for high frame rates
  • 128 GB DDR4 across four 288-pin slots for large memory capacity
  • PCIe 4.0 x4 M.2 slot and four SATA 6 Gb/s ports for fast storage options
  • WiFi 6 and 2.5 Gb LAN for low-latency networking
  • 1-channel Realtek audio with HDMI 2.1 and DisplayPort 1.2 video outputs

Socket AM4 pairing for gaming builds

This bundle pairs an ASUS TUF GAMING B550M-PLUS WIFI II motherboard with an AMD Ryzen 7 5800X3D processor. The board uses the AMD B550 chipset and a Micro ATX layout. The CPU delivers eight cores at a base clock of 3.4 GHz with a 105 W TDP. Together they target gamers who want high frame rates on a compact platform.

Verify cooler clearance and memory speed targets

Confirm your CPU cooler fits the Micro ATX board layout around the 8+2 DrMOS power stages. The board provides four 288-pin DDR4 slots supporting speeds up to 4866 MT/s when overclocked, with a maximum capacity of 128 GB in dual-channel mode. Ensure your kit matches the validated frequencies listed in the QVL. Check that your power supply includes the required 8-pin EPS connector for the CPU.

VRM heatsink handles sustained loads without a fan

The fanless VRM and PCH heatsink arrangement relies on case airflow to dissipate heat during extended sessions. Multiple hybrid fan headers and Fan Xpert 4 allow curve tuning so chassis fans respond to VRM temperatures. The 2.5 Gb LAN and WiFi 6 controllers maintain stable throughput during long downloads or streaming. Dual M.2 slots — one with PCIe 4.0 x4 — keep storage speeds consistent under heavy I/O.

How it compares

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

Price $540.99
Pricier than about 67% 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
Model nameTUF GAMING B550M-PLUS WIFI II
Part number90MB19Y0-MVAAY0
Processor
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3200 / 3000 / 2933 / 2800 / 2666 / 2400 / 2133
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.
Max supported RAM128 GB
Memory channelsDual Channel
ECC supportECC Memory (ECC mode) support varies by CPU
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsAMD Ryzen 5000 Series/ 3000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes)
AMD Ryzen 5000 G-Series/ 4000 G-Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)
AMD B550 Chipset
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
SATA and RAID support0/1/10
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Audio chipRealtek 7.1 Surround Sound High Definition Audio CODEC
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek 2.5Gb Ethernet
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 6
802.11 a/b/g/n/ac/ax
Bluetooth support5.2
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16*
* Actual support may vary by CPU.
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16*
* Running at x4 mode
PCIe x1 slots1 x PCIe 3.0 x1*
* PCIEX16_2 will run x2 mode when PCIEX1 is used.
Rear panel ports2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C)
4 x USB 3.2 Gen 1 ports (4 x Type-A, one port can be switched to USB BIOS FlashBack)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi Module
1 x Realtek 2.5Gb Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x PS/2 Keyboard/Mouse combo port
Onboard USB headers1 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
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Compatibility
Windows 11 supportReady
More details
LightingRGB

Questions about this item

Does the bundle include RAM or an M.2 NVMe drive, or must I buy them separately?

The bundle supplies the motherboard and the Ryzen 7 5800X3D processor only. You must add DDR4 memory and an M.2 NVMe SSD yourself.

The board lists two M.2 slots but only one supports PCIe 4.0 x4 — which slot is that and what length drives does it accept?

M.2_1 is the PCIe 4.0 x4 slot and accepts 2242, 2260 and 2280 length drives.

The CPU is rated at 3.4 GHz base and 105 W TDP — what does that mean for everyday gaming performance?

The 3.4 GHz base clock and 105 W rating indicate strong sustained speeds under load, and the large 3D V-Cache helps keep frame rates high in cache-sensitive titles.

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