MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX
- Price £88.06 at 1 shop
- No. 454 of 40,740 in PC components
- Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
- Supports DDR5 Memory, Dual Channel DDR5 8000+ MT/s (OC)
- Ultra Performance: Direct 7+2+1 Power System with P-PAK, 8-pin CPU power connector, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper
- EZ DIY: EZ M.2 Clip II and EZ PCIe Clip II
- Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 4 x4 M.2
Variant: PRO B840M-B B840 AM5 micro
-
PRO B840M-B B840 AM5 micro £88.06 - PRO B650M-P B650 AM5 micro £1,279.99
-
PRO B840M-P WIFI6E micro AM5 DDR5 £118.05 -
PRO B550M-B B550 AM4 micro £74.31 -
PRO B850M-P WIFI B850 AM5 micro £109.62 -
PRO A620AM-B EVO A620A AM5 micro £67.37 -
A520M PRO A520 AM4 micro £66.51 -
A520M-A PRO A520 AM4 micro £59.57 -
B840M GAMING PLUS WIFI6E B840 AM5 micro £140.94 -
B550M PRO-VDH B550 AM4 micro £82.48 -
PRO B850-P WIFI B850 AM5 £153.41 -
PRO B850-S WIFI6E B850 AM5 £107.81
We have only just started recording this price. After two weeks we will show here whether the current price is a good one.
Offer
Sorted by total price including delivery-
£88.06Go to shop: PCHUB.UK
Prices include VAT, last checked 10 October at 17:08. Prices may have changed since. Advertising: some shops pay Pricuro a commission when you buy through a link. Offers are ordered by total price only; used and refurbished offers come last.
Price history
- Now
- £88.06
- Lowest
- £82.85
- Average
- £83.57
- Highest
- £88.06
Product details
| Brand | MSI |
|---|---|
| Category | PC components |
| Barcode (EAN) | 4711377360166 |
| Shops compared | 1 |
| On Pricuro since | 3 October 2026 |
Processor
4
| 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 |
Memory
8
| Supported memory types | DDR5-SDRAM |
|---|---|
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | Non-ECC |
| Supported memory clock speeds | 4800,5600,8000 MHz |
| Supported memory clock speed (max) | 8000 MHz |
| Maximum internal memory | 128 GB |
Storage controllers
6
| Supported storage drive types | HDD & SSD |
|---|---|
| Supported storage drive interfaces | M.2, Micro SATA III |
| Number of HDDs supported | 4 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| RAID levels | 0, 1, 10 |
Graphics
1
| On-board graphics card | No |
|---|
Internal I/O
10
| 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 |
| Total number of SATA connectors | 4 |
| Number of CPU fan connectors | 1 |
| Number of chassis fan connectors | 5 |
| Number of water pump connectors | 1 |
| RGB LED pin header | Yes |
| Number of RGB LED pin headers | 3 |
Rear panel I/O ports
5
| USB 2.0 ports quantity | 2 |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
Network
5
| Ethernet LAN | Yes |
|---|---|
| Ethernet interface type | 2.5 Gigabit Ethernet |
| LAN controller | Realtek RTL8125D |
| Wi-Fi | No |
| Top Wi-Fi standard | Not available |
Features
8
| Motherboard chipset | AMD B840 |
|---|---|
| Audio chip | Realtek ALC897 |
| Audio output channels | 7.1 channels |
| Product colour | Black |
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Windows operating systems supported | Windows 11 x64 |
Expansion slots
7
| PCI Express x16 slots | 2 |
|---|---|
| PCI Express x16 (Gen 4.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
BIOS
4
| BIOS type | UEFI AMI |
|---|---|
| BIOS memory size | 256 Mbit |
| ACPI version | 6.5 |
| System Management BIOS (SMBIOS) version | 3.7 |
Weight & dimensions
2
| Width | 226 mm |
|---|---|
| Depth | 243.8 mm |
Manufacturer data: Open Icecat
Product description
BUSINESS ELEGANCE
The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.
MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.
DIRECT…
Read more
BUSINESS ELEGANCE
The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.
MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.
DIRECT 7+2+1 POWER DESIGN
Unleash and sustain the maximum performance with a VRM design built with a total of 7+2+1 digital power phases. With an 8-pin power connector, PRO B840M-B is ready for the challenge of heavy-loading tasks.
Chipset Heatsink
The chipset 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.
Frequently asked questions
Where is MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX cheapest?
Right now at PCHUB.UK for £88.06. We compare one offer.
How much does MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX cost?
Currently £88.06.
Is now a good time to buy MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX?
Building the price history. We have only just started recording this price. After two weeks we will show here whether the current price is a good one.
Is MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX in stock?
Yes, one shop lists it as in stock.
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