MSI 911-7E66-001 motherboard AMD B850 Socket AM5 micro ATX
MSI 911-7E66-001, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5,...Read full description ↓
| Date | Price |
|---|---|
| 23 April 2026 | £119.99 |
| 23 April 2026 | £119.99 |
| 23 April 2026 | £119.99 |
| 1 May 2026 | £139.99 |
| 7 May 2026 | £139.99 |
| 8 May 2026 | £139.99 |
| 9 May 2026 | £139.99 |
| 24 May 2026 | £139.99 |
| 2 June 2026 | £139.99 |
| 2 June 2026 | £139.99 |
| 23 June 2026 | £136.99 |
| 27 June 2026 | £136.99 |
| 2 July 2026 | £136.99 |
| 6 July 2026 | £136.99 |
| 9 July 2026 | £139.99 |
| 11 July 2026 | £143.28 |
| 15 July 2026 | £143.28 |
| 18 July 2026 | £144.99 |
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Product Information
MSI MAG B850M MORTAR WIFI
MAG B850M MORTAR WIFI is designed for gamers with a stable, durable and DIY friendly foundation for their PC builds. Coming up with true Wi-Fi 7 solution, 5G LAN, USB 20Gbps, PCIe 5.0 solutions, Supplemental PCIe Power, and exclusive EZ DIY features, it's ready for the battlefield of AMD Ryzen™ 9000 series processors.
MSI's mainstream MAG series epitomizes stability and durability and is built to withstand the most intense gaming sessions. The entire lineup features robust construction with metallic-like hardness and excellent heat dissipation, ensuring stability for all critical gaming components.
12+2+1 Duet Rail Power System
Unleash and sustain maximum performance with a flagship VRM design built with a total of 12+2+1 digital power phases. Combining dual power connectors and 60A Smart Power Stage, MAG B850M MORTAR WIFI is ready for the challenge of high-end processors.
Extended Heatsink
Extended Heatsink enlarges the surface of heat dissipation and maintain the performance at heavy loads.
Double-sided M.2 Shield Frozr
Strengthened M.2 thermal solution helps keep M.2 SSD safe and ensures incredible performance.
Heavy Plated VRM Heatsink
The VRM heatsink covers the upper MOS and helps dissipate the heat.
7W/mK Thermal Pad & Additional Choke Pad
High-quality 7W/mK MOSFET thermal pads and additional choke thermal pads ensure stable performance when all cores are runnging at high speed.
Enlarged Chipset Heatsink
The enlarged heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.
HIGH-BANDWIDTH AND LOW-LATENCY NETWORK
MSI's premium network solution provides incredible data transfer speed for demanding users.
Product
- Name
- MSI 911-7E66-001 motherboard AMD B850 Socket AM5 micro ATX
- Category
- Motherboards
- Brand
- MSI
Weight & dimensions
- Width
- 243.8 mm
- Depth
- 243.8 mm
Memory
- Supported memory types
- DDR5-SDRAM
- Number of memory slots
- 4
- Maximum internal memory
- 256 GB
- Memory slots type
- DIMM
- Memory channels
- Dual-channel
- ECC сompatibility
- Non-ECC
- Supported memory clock speeds
- 4800,5600,6400,8200 MHz
- Supported memory clock speed (max)
- 8200 MHz
Processor
- Processor manufacturer
- AMD
- Processor socket
- Socket AM5
- Compatible processor series
- AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
- Supported processor sockets
- Socket AM5
Rear panel I/O ports
- USB 2.0 ports quantity
- 0
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- 4
- USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
- 0
- USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
- 3
- USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
- 2
- Ethernet LAN (RJ-45) ports
- 1
- VGA (D-Sub) ports quantity
- 0
- HDMI ports quantity
- 1
- DVI-D ports quantity
- 0
- HDMI version
- 2.1
Internal I/O
- USB 2.0 connectors
- 4
- USB 3.2 Gen 1 (3.1 Gen 1) connectors
- 2
- USB 3.2 Gen 2 (3.1 Gen 2) connectors
- 1
- Number of SATA III connectors
- 4
- Number of SATA II connectors
- 0
- Number of SATA connectors
- 0
- Total number of SATA connectors
- 4
- Front panel audio connector
- Yes
- Front panel connector
- Yes
- ATX Power connector (24-pin)
- Yes
- CPU fan connector
- Yes
- Number of CPU fan connectors
- 2
- Number of water pump connectors
- 1
- RGB LED pin header
- Yes
- Number of RGB LED pin headers
- 3
Network
- Wi-Fi
- Yes
- Ethernet LAN
- Yes
- Ethernet interface type
- 5 Gigabit Ethernet
- Top Wi-Fi standard
- Wi-Fi 7 (802.11be)
- 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)
- Bluetooth
- Yes
- Bluetooth version
- 5.4
Expansion slots
- PCI Express x4 slots
- 1
- PCI Express x16 slots
- 1
- PCI Express x16 (Gen 3.x) slots
- 1
- PCI Express x16 (Gen 4.x) slots
- 1
- PCI Express x16 (Gen 5.x) slots
- 1
- Number of M.2 (M) slots
- 3
- 1st M.2 largest key size
- 2280
- 1st M.2 highest PCI Express generation
- 5.0
- 2nd M.2 largest key size
- 2280
- 2nd M.2 highest PCI Express generation
- 5.0
- 3rd M.2 largest key size
- 2280
- 3rd M.2 highest PCI Express generation
- 4.0
BIOS
- BIOS type
- UEFI AMI
- BIOS memory size
- 256 Mbit
- ACPI version
- 6.5
- System Management BIOS (SMBIOS) version
- 3.7
Other features
- mSATA ports quantity
- 0
Graphics
- On-board graphics card
- No
Features
- Component for
- PC
- Motherboard form factor
- micro ATX
- Motherboard chipset family
- AMD
- Motherboard chipset
- AMD B850
- Audio output channels
- 7.1 channels
- Audio chip
- Realtek ALC4080
- Product colour
- Black
- Windows operating systems supported
- Windows 11 x64
Storage controllers
- Supported storage drive interfaces
- M.2
- Supported storage drive types
- HDD & SSD
- Number of HDDs supported
- 4
- Number of storage drives supported
- 7
- RAID support
- Yes
- RAID levels
- 0, 1, 10
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