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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

  • CPU Socket TypeAM5
  • CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B840
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to 7600+MT/s (OC)
  • Maximum Memory Supported192GB

Option PRIME B840-PLUS WIFI

Les versions barrées existent, mais ne sont pas disponibles ici.

  • 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.

Points forts

  • 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

Caractéristiques

BrandASUS
ModelPRIME B840-PLUS WIFI
Part Number90MB1IZ0-M0AAY0
CPU Socket TypeAM5
CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
ChipsetAMD B840
Number of Memory Slots4x288pin (DDR5)
Memory StandardUp to 7600+MT/s (OC)
Maximum Memory Supported192GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO
ECC SupportedYes
Buffer SupportedUn-buffered
Memory FeatureDual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
PCI Express 4.0 x16AMD 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)
PCI Express 3.0 x16AMD B840 Chipset
1 x PCIe 3.0 x16 slot (support x4 mode)***
2 x PCIe 3.0 x16 slots (support x1 mode)***
*** The PCIEX16(G3)_1/3 and PCIEX1(G3) share bandwidth with PCIEX16(G3)_2. The PCIEX16(G3)_2 will run x1 mode when any of the PCIEX16(G3)_1/3 and PCIEX1(G3) slots is occupied.
PCI Express x11 x PCIe 3.0 x1 slot***
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD 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 RAIDAMD 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.
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 ax
BluetoothBluetooth 5.3
Back I/O Ports1 x USB 10Gbps port (1 x USB Type-C)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
Onboard USB1 x USB 5Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps 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
4 x 4-pin Chassis Fan header
Miscellaneous
3 x Addressable Gen 2 headers
1 x Clear CMOS header
1 x Chassis Intrusion header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header
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 CPU Power connectors
1 x 4-pin +12V CPU Power connectors
BIOS Feature256 Mb Flash ROM, UEFI AMI BIOS
SoftwareASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS Driver Hub
ASUS GlideX
TurboV Core
ASUS CPU-Z
Norton 360 Deluxe (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey
Windows 11Windows 11, Windows 10 64-bit
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot core+
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- 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
- Pre-mounted I/O shield
- SafeSlot core+
Aura Sync
- Addressable Gen 2 headers
Package ContentsCables
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
Poids d’expédition2.72 kg
Dimensions du colis356 × 279 × 76 mm

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Questions sur cet article

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.

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