ASUS Prime B840-PLUS WiFi
ASUS Prime B840-PLUS WiFi Specifications
ASUS Prime B840-PLUS WiFi by ASUS is a Standard-ATX form factor motherboard based on the entry-level B840 chipset and AM5 socket, with basic features and limited connectivity. It is designed to support DDR5 memory up to 256 GB and memory overclocking up to 7600 MHz. The motherboard features 4 memory slots and offers support for PCIe 4.0 x16, ensuring compatibility with modern GPUs and high-bandwidth expansion cards.
ASUS Prime B840-PLUS WiFi Performance Review
The ASUS Prime B840-PLUS WiFi comes with a basic VRM configuration, providing 60 A across 8 phases. It is designed for entry-level to mid-range low-wattage CPUs. Overclocking or using high-wattage CPUs may lead to thermal issues or potential damage. This board is recommended for budget builds or users with modest performance needs.
This motherboard includes an entry-level audio chipset — Realtek ALC887/897 — which provides basic sound quality suitable for casual use. While it’s acceptable for everyday tasks such as web browsing, video playback, and light gaming, it may not meet the expectations of users with mid to high-end audio setups. Audiophiles and those seeking high-fidelity sound should consider using a dedicated sound card or external DAC.
This board delivers balanced value with a performance-per-price ratio of 54.5%, offering a solid blend of features, quality, and affordability.
Motherboard Information
Manufacturer: ASUS
Motherboard Name: ASUS Prime B840-PLUS WiFi
Current Price Amazon: $149
Amazon Price Updated: 19Â hours, 34Â minutes ago.
Motherboard Available: True
Chipset / Socket: B840 / AM5
Form Factor / Memory Slots: Standard-ATX / 4 slots.
Memory Type / Max Cap / Max OC: DDR5 / 256 GB / 7600 MHz
PCIe Suport: PCIe 4.0 x16
Audio Chipset: Realtek ALC887/897
Network: 1 x Realtek 2.5Gb Ethernet
Motherboard Dimensions: 30.5 cm x 24.4 cm
Quality & Features (max 110pts)
VRM Quality: 5 pts.
Chipset Q & F: 11 pts.
Build Quality: 10 pts.
Connectivity Q & F: 9 pts.
Audio Quality: 6 pts.
Total Points: 41 pts.
VRM Configuration
CPU Power Phases (Amps): 8 (60 A)
Power Design: 8+2+1
Calculated Performance
Quality and Features per Price: 54.5%
Additional Motherboard Information
Memory:
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO™)
ASUS Enhanced Memory Profile (AEMP)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics:
1 x HDMI™ port*** Â
* Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
** Supports max. 8K@30Hz as specified in DisplayPort 1.4.
*** Supports 4K@60Hz as specified in HDMI 2.1.
Storage:
AMD 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
4 x SATA 6Gb/s ports
* Specifications vary by CPU types.
AMD RAIDXpert2 Technology
Ryzen™ 9000 Series Processors: RAID 0/1/5/10
Ryzen™ 8000 Series Processors: RAID 0/1
Ryzen™ 7000 Series Processors: RAID 0/1/10
USB:
2 x USB 10Gbps port(s) (1 x Type-A + 1 x USB Type-C®)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
Front USB (Total 7 ports)
1 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
* USB Type-C® power delivery output: max. 5V/3A
Internal I/O:
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
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connectors
1 x 4-pin +12V CPU Power connectors
Storage Related
3 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 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
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
Back Panel I/O:
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
WiFi:
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.
** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications."
Audio:
- 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
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Special Features:
- 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