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ATX motherboard in dark grey with silver heatsinks and a boxed Ryzen 9 9950X3D processor

ASUS

ASUS PRIME B650-PLUS + Ryzen 9 9950X3D AMD motherboard CPU combo

SKU CH-AN45-0ECPW

ATX AM5 board paired with a 16-core Zen 5 CPU, DDR5 to 6400, PCIe 5.0 M.2, 2.5Gb LAN, USB4 support and BIOS FlashBack

  • ProcessorSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) /

Model PRIME B650-PLUS

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CPU +Ryzen 9 9950X3D

  • 16-core CPU with 128 MB L3 cache for heavy multitasking
  • DDR5 memory up to 6400 MT/s with OptiMem II for stable overclocking
  • PCIe 5.0 M.2 slot enables fastest storage bandwidth
  • 5 Gb Ethernet plus USB4 support for high-speed connectivity
  • VRM, M.2 and PCH heatsinks with Fan Xpert 2+ keep thermals in check

AM5 Combo for Ryzen 9000 and 7000

This motherboard and CPU combination pairs the ASUS PRIME B650-PLUS with an AMD Ryzen 9 9950X3D processor. The AM5 socket supports Ryzen 9000, 8000 and 7000 series desktop CPUs. Four DDR5 slots accept up to 256 GB of memory. The board delivers PCIe 5.0 on the primary M.2 slot and 2.5 Gb Ethernet for fast networking.

Sustained Load Behaviour

The Ryzen 9 9950X3D runs at a 170 W TDP with 128 MB of L3 cache and 16 MB of L2 cache. The motherboard provides a VRM heatsink, an M.2 heatsink and a PCH heatsink linked to hybrid fan headers controlled by Fan Xpert 2+. This cooling arrangement is designed to maintain performance during extended workloads rather than brief bursts.

Build and Connectors

The ATX board uses 288-pin DDR5 slots with OptiMem II trace routing for signal integrity. Rear I/O includes HDMI, DisplayPort, USB 3.2 Gen 2 Type-C, USB 3.2 Gen 1 Type-C and USB4 support. Four SATA 6 Gb/s ports and two PCIe 4.0 x1 slots add expansion room. BIOS FlashBack updates firmware without a CPU or memory installed. Aura Sync headers address RGB lighting.

How it compares

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

Price $1,014.99
Pricier than about 89% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product linePrime
Model namePRIME B650-PLUS+R9 9950 × 3D
Processor
ProcessorSupports AMD Ryzen 7000 Series Desktop Processors*
* Refer to www.asus.com for CPU support list.
CPU socketAM5
ChipsetAMD B650
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsAMD Ryzen 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
SATA and RAID supportAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10
Audio & video
Sound channelsRealtek 7.1 Surround Sound High Definition Audio CODEC
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardVertical M.2 slot only (Key E, PCIe)*
* Wi-Fi module is sold separately.
Ports & slots
PCIe x1 slots2 x PCIe 4.0 x1 slots
Onboard USB headers1 x USB 3.2 Gen 1 connector (supports USB Type-C )
1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported

Other versions of this model

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Questions about this item

How loud and hot does the Ryzen 9 9950X3D run under sustained 170W loads?

The CPU has a 170W TDP. The board includes a VRM heatsink, M.2 heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+ to manage thermals.

Which DDR5 memory kit do I need to populate the four 288-pin slots?

The board accepts DDR5 modules at speeds from 4800 up to 6400+(OC) with AMD EXPO support. Maximum capacity is 256GB across four slots in dual-channel mode.

Will my existing SATA SSDs and PCIe 4.0 graphics card work with this AM5 platform?

The board provides four SATA 6Gbps ports, one PCIe 4.0 x16 slot at x16 mode, one PCIe 4.0 x16 slot at x4 mode and two PCIe 4.0 x1 slots for legacy add-in cards.

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