We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
ATX motherboard dark PCB silver heatsinks rear I/O shield

ASUS

ASUS PRIME B840-PLUS WIFI AMD motherboard

SKU CH-FD6W-HAMQ4 MPN PRIME B840-PLUS WIFI

ATX board for AM5 Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 7600 MT/s, 192 GB max, three M.2 slots, Wi-Fi 6E and 2.5 Gb LAN

  • ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B840
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 7600+MT/s (OC)

Model PRIME B840-PLUS WIFI

Show 5 more
  • AM5 socket supports Ryzen 7000, 8000 and 9000 series processors
  • Four DDR5 slots accept up to 192 GB at 7600 MT/s
  • Two PCIe 4.0 M.2 slots and four SATA ports for fast storage
  • Wi-Fi 6E and 2.5 Gb LAN give high-speed wired and wireless links
  • Rear USB 10 Gbps Type-A and Type-C plus front USB 5 Gbps Type-C header

AM5 socket for Ryzen 7000 8000 9000 series

The ASUS PRIME B840-PLUS WIFI is an ATX motherboard built around the AMD B840 chipset and AM5 socket. It supports Ryzen 7000, 8000 and 9000 series desktop processors. The board provides four DDR5 slots for up to 192GB of memory running at 7600 MT/s with EXPO or AEMP profiles. It is suited to builders who want AI-ready performance and extensive connectivity.

Pre-mounted I/O shield

A pre-mounted I/O shield removes the usual fiddly alignment step. BIOS FlashBack lets you update firmware without a CPU or memory installed, which avoids a common dead-end when a new processor needs a newer BIOS. Q-LED Core and Q-Dashboard give clear POST codes and visual slot status so wiring mistakes are caught early. The Q-Antenna snaps onto the Wi-Fi 6E module without screwing.

Check CPU generation for PCIe lane allocation

Ryzen 7000 and 9000 series give a full PCIe 4.0 x16 primary slot and two PCIe 4.0 M.2 slots at 2280. Ryzen 8000 series reduces the primary slot to x8 or x4 and changes M.2 lane distribution. The chipset adds one PCIe 3.0 x4 slot, two x1 slots and a shared x1 slot. Verify your cooler clears the VRM heatsink and that your power supply has the required 8-pin EPS connector.

How it compares

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

Price $174.99
Cheaper than about 57% 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 namePRIME B840-PLUS WIFI
Part number90MB1IZ0-M0AAY0
Processor
ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
CPU socketAM5
ChipsetAMD B840
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to 7600+MT/s (OC)
Max supported RAM192 GB
Memory channelsDual Channel
Memory profilesAMD EXPO
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4/x2 mode)
AMD B840 Chipset
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 mode
SATA and RAID supportAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1.
*RAID 5 Function is only supported by AMD Ryzen 9000 series CPU.
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 ax
Bluetooth support5.3
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)
PCIe x1 slots1 x PCIe 3.0 x1 slot***
Onboard USB headers1 x USB 5 Gbit/s connector (supports USB Type-C)
1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s 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 CPU Power connectors
1 × 4-pin +12 V CPU Power connectors
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Shipping weight2.72 kg
Package size356 × 279 × 76 mm
Compatibility
Windows 11 supportWindows 11, Windows 10 64-bit
In the box
In the boxCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
2 x M.2 rubber packages
2 x Screw packages for M.2 SSD
Documentation
1 x Quick start guide
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

5 more in the same range

Questions about this item

How do I confirm the ASUS PRIME B840-PLUS WIFI is working after setup?

Power on and check the Q-LED Core indicators for CPU, memory, GPU and boot status; enter BIOS to verify the installed CPU is detected, DDR5 runs at the expected MT/s and all four M.2 slots appear.

What ships in the box with the PRIME B840-PLUS WIFI and what must I buy separately?

The motherboard, pre-mounted I/O shield, Wi-Fi 6E antenna kit, SATA cables, M.2 screws and documentation are included; you must purchase an AM5 Ryzen 7000/8000/9000 processor, DDR5 memory modules, storage drives and a power supply separately.

Which memory capacity should I choose for the four DDR5 slots on this board?

The board supports up to 192 GB across four 288-pin slots in dual-channel mode; populate two or four modules for best performance and enable AMD EXPO or AEMP profiles for speeds up to 7600+ MT/s.

More in Motherboards for AMD CPUs

Similar items