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ATX motherboard with silver heatsinks and black PCB

ASUS

ASUS PRIME B650-PLUS AMD motherboard

SKU CH-5S85-C97EY

ATX board for AMD Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 6400, PCIe 5.0 M.2, 2.5Gb LAN and BIOS FlashBack

  • 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
  • Ready for AMD Ryzen 9000, 8000 and 7000 series CPUs via AM5 socket
  • M.2 slot supports PCIe 5.0 x4 for the fastest storage speeds
  • 5 Gbps LAN and USB 3.2 Gen 2 Type-C deliver quick wired connectivity
  • OptiMem II trace routing preserves signal integrity for higher DDR5 overclocks
  • BIOS FlashBack updates firmware safely without a CPU or memory installed

AM5 Platform for Ryzen 7000, 8000, 9000

The ASUS Prime B650-PLUS is an ATX motherboard built on the AMD B650 chipset for socket AM5 processors. It supports Ryzen 7000, 8000 and 9000 series CPUs, with a BIOS update potentially required for the newest chips. Four DDR5 slots accept up to 256 GB of unbuffered memory with ECC and EXPO profiles. The board targets builders who want a mainstream platform with PCIe 5.0 M.2 and 2.5 Gb Ethernet.

Suits mainstream builds, not compact cases

This board fits standard ATX chassis and serves gaming rigs, workstations and general-purpose desktops that need four memory slots and multiple M.2 drives. Builders using smaller ITX cases or requiring onboard Wi-Fi should look at alternative form factors. The VRM heatsink, M.2 heatsink and PCH heatsink handle sustained loads, while Fan Xpert 2+ manages hybrid fan headers for balanced airflow.

PCIe 5.0 M.2 slot for fastest storage

The primary M.2_1 slot connects directly to the CPU and runs at PCIe 5.0 x4, supporting 2242, 2260, 2280 and 22110 modules. A second M.2_2 slot operates at PCIe 4.0 x4 from the chipset. This direct Gen 5 link is the specification that determines whether the board matches a workload demanding maximum sequential throughput from a single drive.

Highlights

  • Ready for AMD Ryzen 9000, 8000 and 7000 series CPUs via AM5 socket
  • M.2 slot supports PCIe 5.0 x4 for the fastest storage speeds
  • 5 Gbps LAN and USB 3.2 Gen 2 Type-C deliver quick wired connectivity
  • OptiMem II trace routing preserves signal integrity for higher DDR5 overclocks
  • BIOS FlashBack updates firmware safely without a CPU or memory installed

Specifications

BrandASUS
SeriesPrime
ModelB650-PLUS
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 ContentsCables
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

Questions about this item

How much DDR5 memory can the four slots on this board hold in total?

The four 288-pin slots support up to 256GB of DDR5 running in dual-channel mode.

What cooling hardware is already on the board for all-day operation?

It includes a VRM heatsink, an M.2 heatsink, a PCH heatsink, hybrid fan headers and Fan Xpert 2+ software control.

Which CPU and memory must I already have to use the AM5 socket and DDR5 slots?

You need an AMD Ryzen 7000, 8000 or 9000 series processor and DDR5 modules; a BIOS update may be required for 8000 and 9000 series CPUs.

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