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ATX motherboard with large silver VRM heatsinks, black PCB, and Ryzen 9 9900X CPU in AM5 socket

ASUS

ASUS PRIME B650-PLUS WIFI AMD motherboard & Ryzen 9 9900X CPU combo

SKU CH-SCTR-2T2P8

A B650 ATX motherboard paired with a 12-core Ryzen 9 9900X CPU, supporting DDR5 up to 7600 MT/s, PCIe 5.0 M.2, 2.5 Gbps LAN, WIFI 6E and Thunderbolt 4 header

  • CPU socketAM5
  • ChipsetAMD B650
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memory7600+(OC)/7200(OC)/7000(OC)/6800(OC)/6600(OC)/6400(OC)/6200(
  • Max supported RAM192 GB

Model PRIME B650-PLUS WIFI

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CPU +Ryzen 9 9900X

  • Ready for AMD Ryzen 9000, 8000 and 7000 series processors with AM5 socket
  • 12 cores and 24 threads on Zen 5 architecture with 5.6 GHz max boost
  • DDR5 memory support up to 7600 MT/s overclocked across four slots for 192 GB capacity
  • PCIe 5.0 M.2, 2.5 Gb Ethernet, WIFI 6E and USB 10 Gbps Type-C for ultrafast connectivity
  • VRM, M.2 and PCH heatsinks plus hybrid fan headers with Fan Xpert 2+ for comprehensive cooling

Combo overview

The package pairs an ASUS PRIME B650-PLUS WIFI motherboard with an AMD Ryzen 9 9900X processor, delivering a ready-to-build platform for AM5 socket CPUs. The board supports Ryzen 9000, 8000 and 7000 series chips, while the included 9900X brings 12 cores and 24 threads based on Zen 5 architecture. Dual-channel DDR5 memory scales up to 192 GB across four slots, and a BIOS update may be required for the newest processors.

Thermals and power

Comprehensive cooling covers the VRM, M.2 and PCH areas with dedicated heatsinks, while hybrid fan headers and Fan Xpert 2+ software manage airflow. The Ryzen 9 9900X operates with a 5.6 GHz maximum boost clock and unlocked multiplier for overclocking, drawing power through the board's robust delivery system. WIFI 6E and 2.5 Gbps LAN add connectivity without adding significant thermal load.

Build and connectivity

ATX form factor provides four SATA 6 Gbps ports, one PCIe 4.0 x16 slot and a PCIe 5.0 M.2 interface for high-speed storage. Rear I/O includes USB 10 Gbps Type-C, while a front-panel USB 5 Gbps Type-C header and Thunderbolt 4 header expand front-panel options. Addressable Gen 2 RGB headers and a standard Aura RGB header allow synchronised lighting, and BIOS FlashBack enables updates without a CPU installed.

How it compares

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

Price $744.99
Pricier than about 76% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineB650
Model namePRIME B650-PLUS WIFI+R9 9900X
Processor
CPU socketAM5
ChipsetAMD B650
Memory
Memory slot count4 × 288pin (DDR5)
Supported memory7600+(OC)/7200(OC)/7000(OC)/6800(OC)/6600(OC)/6400(OC)/6200(OC)/6000(OC)/5800(OC)/5600(OC)/5400(OC)/5200/5000
Max supported RAM192 GB
Memory channelsDual Channel
ECC supportNon-ECC
Storage
SATA ports4 x SATA 6Gb/s
Audio & video
Sound channels7.1 Channels
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWIFI 6E
Bluetooth supportYes
Ports & slots
PCIe 4.0 x16 slotsAMD Ryzen™ 9000 & 7000 Series Desktop Processors*
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen™ 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
Size & build
Form factorATX
Compatibility
Windows 11 supportSupported

Other versions of this model

5 more in the same range

Questions about this item

How do I install the Ryzen 9 9900X into the AM5 socket without bending pins?

Lift the retention lever, align the gold triangle on the CPU with the socket corner, place the chip gently without pressure, lower the lever until it clicks. The step people miss is removing the plastic protective cover from the socket before insertion.

What maintenance will the VRM heatsink and M.2 heatsink need over time?

Dust the VRM heatsink and M.2 heatsink fins every 6–12 months with compressed air; the thermal pads on the M.2 heatsink may need replacement if SSD temperatures rise noticeably after years of use.

At what point does the 2.5Gb Ethernet or WIFI 6E become the bottleneck during sustained transfers?

The 2.5Gbps LAN caps wired throughput at roughly 2.5 Gbps, while WIFI 6E real-world speeds typically peak lower; either interface will saturate before the PCIe 5.0 M.2 or USB 10Gbps Type-C headers do.

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