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ATX motherboard in grey with silver heatsinks and CPU in clear box

ASUS

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

SKU CH-JK7Z-EN0MV

A ready-to-build AMD AM5 platform pairing a 12-core 5.6 GHz Ryzen 9 9900X with a B650 board that supports DDR5 up to 6400 OC, PCIe 5.0 M.2, 2.5 Gb Ethernet and USB4

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) /
  • Maximum Memory Supported256GB

model PRIME B650-PLUS

+CPU +Ryzen 9 9900X

  • 12 cores and 24 threads handle heavy workloads with the included Ryzen 9 9900X
  • DDR5 memory scales to 6400 MT/s across four slots for 256 GB total capacity
  • M.2 slot runs at PCIe 5.0 x4 for the fastest storage throughput
  • Realtek 2.5 Gb LAN and USB 3.2 Gen 2 Type-C keep data moving quickly
  • VRM, M.2 and PCH heatsinks plus Fan Xpert 2+ cool the system under load

AM5 combo for 12-core Ryzen 9 9900X

The ASUS PRIME B650-PLUS motherboard ships paired with a Ryzen 9 9900X processor that delivers 12 cores and 24 threads on the Zen 5 architecture. The board uses the AMD B650 chipset and an AM5 socket ready for Ryzen 7000, 8000 and 9000 series CPUs. Four DDR5 slots support up to 256 GB of memory with EXPO profiles and OptiMem II trace routing for stability at higher data rates.

VRM heatsink M.2 heatsink PCH heatsink Fan Xpert 2+

Comprehensive cooling covers the voltage regulators, the primary M.2 slot and the chipset with dedicated heatsinks. Hybrid fan headers connect to Fan Xpert 2+ software for automatic speed curves based on component temperatures. The 12-core CPU has a 5.6 GHz maximum boost frequency and an unlocked multiplier for manual overclocking within the board's power delivery limits.

PCIe 5.0 M.2 2.5Gb LAN USB4 support BIOS FlashBack

The top M.2 slot runs at PCIe 5.0 x4 for 2242 2260 2280 and 22110 drives while a second slot provides PCIe 4.0 x4. Rear I/O includes Realtek 2.5Gb Ethernet USB 3.2 Gen 2 Type-C HDMI DisplayPort and a USB BIOS FlashBack port that updates firmware without a CPU or memory installed. USB4 support and front-panel USB 3.2 Gen 1 Type-C complete the connectivity set.

Highlights

  • 12 cores and 24 threads handle heavy workloads with the included Ryzen 9 9900X
  • DDR5 memory scales to 6400 MT/s across four slots for 256 GB total capacity
  • M.2 slot runs at PCIe 5.0 x4 for the fastest storage throughput
  • Realtek 2.5 Gb LAN and USB 3.2 Gen 2 Type-C keep data moving quickly
  • VRM, M.2 and PCH heatsinks plus Fan Xpert 2+ cool the system under load

Specifications

BrandASUS
SeriesPrime
ModelPRIME B650-PLUS+R9 9900X
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors*
* Refer to www.asus.com for CPU support list.
ChipsetAMD B650
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 6400+(OC) / 6200(OC) / 6000(OC) / 5800(OC) / 5600(OC) / 5400(OC) / 5200 / 5000 / 4800*
* Supported memory types, data rate(Speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.
* Non-ECC, Un-buffered DDR5 Memory supports On-Die ECC function.
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedYes
Buffer SupportedUn-buffered
Memory FeatureSupports AMD EXTended Profiles for Overclocking (EXPO)
OptiMem II
PCI Express 4.0 x16AMD Ryzen 7000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD B650 Chipset
1 x PCIe 4.0 x16 slot (supports x4 mode)
* Please check the PCIe bifurcation table on the ASUS support site
PCI Express x12 x PCIe 4.0 x1 slots
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD 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 RAIDAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10
Audio 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
Max LAN Speed2.5Gbps
Wireless LANVertical M.2 slot only (Key E, PCIe)*
* Wi-Fi module is sold separately.
Back I/O Ports4 x USB 3.2 Gen 2 ports (3 x Type-A + 1 x USB Type-C)
2 x USB 3.2 Gen 1 ports (2 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Vertical M.2 slot (Key E)
1 x Realtek 2.5Gb Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
Onboard USB1 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
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 x 4-pin Chassis Fan headers
Storage related
2 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
Miscellaneous
3 x Addressable Gen 2 headers
1 x Aura RGB header
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x SPI TPM header (14-1pin)
1 x 20-3 pin System Panel header with Chassis intrude function
1 x Thunderbolt (USB4) header
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11Supported
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage Protection
- Safeslot Core+
- Stainless-Steel Back I/O
ASUS Q-Design
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- Flexible M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- ProCool
Aura Sync
- Aura RGB header
- Addressable Gen 2 headers
Package Contents1 x AMD Ryzen 9 9900X CPU
1 x Shin-Etsu X-23-7868-2D (1.8g)
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x I/O Shield
1 x M.2 Rubber Package
1 x Screw package for M.2 SSD
Documentation
1 x User guide

Other versions of this model

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Questions about this item

Will the board accept 256 GB of DDR5 memory?

Yes, the board supports up to 256 GB across its four DDR5 slots.

Does the included Ryzen 9 9900X run on this motherboard without a BIOS update?

The CPU is a 9000-series part; the board may need a BIOS update before it will post with that processor.

Can I add a PCIe 5.0 M.2 drive and a second PCIe 4.0 M.2 drive at the same time?

Yes, the primary M.2 slot runs at PCIe 5.0 x4 and the second at PCIe 4.0 x4, both usable together.

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