Tired of dropped frames and unstable connections when you push your PC to the limit? MSIs newest board stops the frustration before it starts. With MSIs Wi-Fi 7 and a 7+2+1 power design, you get steady performance even during marathon gaming sessions. The solution is a motherboard built for AMD Ryzen 9000 series, delivering reliable power, cool operation and fast networking so you can focus on the game, not the hardware.
MSI B840 GAMING PLUS WIFI ATX AM5 Motherboard
This ATX motherboard fits the AM5 socket and supports up to 256 GB DDR5 memory. Its aimed at gamers and creators who need 2.5 Gb Ethernet, Wi-Fi 7, and PCIe 4.0 lanes for graphics and storage. The motherboard includes extended heatsinks, M.2 Shield Frozr cooling and multiple fan headers to keep temperatures low during heavy loads.
Benefits
- Stable high-frame-rate gaming without network lag.
- Cooler CPU and SSD temperatures under sustained load.
- Easy upgrades with four DDR5 slots and two M.2 slots.
- Fast 2.5 Gb LAN and Wi-Fi 7 for low-latency play.
- Simple BIOS tweaks thanks to AI-enhanced MSI Center.
- Reliable power delivery for overclocking and heavy workloads.
Features
- Direct 7+2+1 VRM power design
- Extended heatsink for VRM cooling
- M.2 Shield Frozr thermal solution
- 2.5 Gb Ethernet plus Wi-Fi 7
- Four PCIe 4.0 x16 slots
- Four DDR5 DIMM slots, 8000 MHz support
- Eight fan headers, one water pump connector
- USB-C 10 Gbps, multiple USB-A ports
Specifications
| Processor |
| Maximum internal memory supported by processor |
256 GB |
| Supported processor sockets |
Socket AM5 |
| Compatible processor series |
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket |
Socket AM5 |
| Processor manufacturer |
AMD |
| Memory |
| Maximum internal memory |
256 GB |
| Supported memory clock speed (max) |
8000 MHz |
| Supported memory clock speeds |
4800,5600,8000 MHz |
| ECC сompatibility |
Non-ECC |
| Memory channels |
Dual-channel |
| Memory slots type |
DIMM |
| Number of memory slots |
4 |
| Supported memory types |
DDR5-SDRAM |
| Storage controllers |
| RAID levels |
0, 1, 10 |
| RAID support |
Yes |
| Number of HDDs supported |
4 |
| Number of storage drives supported |
6 |
| Supported storage drive interfaces |
M.2, Micro SATA III |
| Supported storage drive types |
HDD & SSD |
| Graphics |
| On-board graphics card |
No |
| Internal I/O |
| Number of RGB LED pin headers |
3 |
| RGB LED pin header |
Yes |
| Number of water pump connectors |
1 |
| Number of chassis fan connectors |
5 |
| Number of CPU fan connectors |
1 |
| Total number of SATA connectors |
4 |
| Number of SATA connectors |
0 |
| Number of SATA II connectors |
0 |
| Number of SATA III connectors |
4 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors |
1 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors |
2 |
| USB 2.0 connectors |
4 |
| Rear panel I/O ports |
| DVI-D ports quantity |
0 |
| HDMI version |
2.1 |
| HDMI ports quantity |
1 |
| VGA (D-Sub) ports quantity |
0 |
| Ethernet LAN (RJ-45) ports |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity |
1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
2 |
| USB 2.0 ports quantity |
4 |
| Network |
| Bluetooth version |
5.4 |
| Bluetooth |
Yes |
| Wi-Fi standards |
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be) |
| Top Wi-Fi standard |
Wi-Fi 7 (802.11be) |
| Wi-Fi |
Yes |
| Ethernet interface type |
2.5 Gigabit Ethernet |
| Ethernet LAN |
Yes |
| Features |
| Windows operating systems supported |
Windows 11 x64 |
| PC health monitoring |
CPU, Fan, Temperature, Voltage |
| Product colour |
Black |
| Audio output channels |
7.1 channels |
| Audio chip |
Realtek ALC897 |
| Motherboard chipset |
AMD B840 |
| Motherboard chipset family |
AMD |
| Motherboard form factor |
ATX |
| Component for |
PC |
| Expansion slots |
| 2nd M.2 highest PCI Express generation |
4.0 |
| 2nd M.2 largest key size |
22110 |
| 1st M.2 highest PCI Express generation |
4.0 |
| 1st M.2 largest key size |
2280 |
| Number of M.2 (M) slots |
2 |
| PCI Express x16 (Gen 3.x) slots |
4 |
| PCI Express x16 (Gen 4.x) slots |
1 |
| BIOS |
| ACPI version |
6.5 |
| BIOS type |
UEFI AMI |
| Weight & dimensions |
| Depth |
304.8 mm |
| Width |
243.8 mm |
| Other features |
| Maximum internal memory |
256 GB |
| mSATA ports quantity |
0 |
