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Asus

Asus AM5 Prime B840M-A-CSM M-atx

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£119.18
PCHUB.UK see shop

Up to £19.81 cheaper than the most expensive shop

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  1. ● In stock see shop
    £119.18
    Go to shop: PCHUB.UK
  2. ● In stock see shop
    £138.99
    Go to shop: Tesco Stores

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

£118.96£119.07£119.18 3 Oct5 Oct7 Oct10 Oct
Lowest price per day over 8 days.
Now
£119.18
Lowest
£118.96
Average
£119.10
Highest
£119.18

Product details

Product details
BrandAsus
CategoryPC components
Barcode (EAN)4711387797204
Shops compared2
Price range£119.18 – £138.99
On Pricuro since3 October 2026

Processor

4
Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5

Memory

8
Supported memory typesDDR5-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & Non-ECC
Supported memory clock speed (max)7600 MHz
Maximum internal memory192 GB
Unbuffered memoryYes

Storage controllers

6
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, SATA III
Number of HDDs supported4
Number of storage drives supported7
RAID supportYes
RAID levels0, 1, 5, 10

Graphics

2
Parallel processing technology supportNot supported
Maximum resolution7680 x 4320 pixels

Internal I/O

16
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
Number of SATA III connectors4
S/PDIF out connectorYes
Front panel audio connectorYes
Front panel connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of CPU fan connectors2
Number of chassis fan connectors2
EPS power connector (8-pin)Yes
Number of EPS power connectors (8-pin)1
Number of COM connectors1
TPM connectorYes
RGB LED pin headerYes
Number of RGB LED pin headers3

Rear panel I/O ports

10
USB 2.0 ports quantity4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
Ethernet LAN (RJ-45) ports1
HDMI ports quantity1
HDMI version2.1
DisplayPorts quantity1
DisplayPort version1.4
Headphone outputs1
Line-inYes

Network

4
Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet
Wi-FiNo
Top Wi-Fi standardNot available

Features

8
Motherboard chipsetAMD B840
Audio output channels7.1 channels
Product colourGrey
Component forPC
Motherboard form factormicro ATX
Motherboard chipset familyAMD
Power source typeATX
Windows operating systems supportedWindows 10 x64, Windows 11

Expansion slots

9
PCI Express x16 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Number of M.2 (M) slots3
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0

BIOS

2
BIOS typeUEFI AMI
BIOS memory size256 Mbit

Packaging data

4
Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg

Weight & dimensions

2
Width244 mm
Depth244 mm

Packaging content

2
Cables includedSATA
Screws includedYes

Other features

2
Weight910 g
Quick installation guideYes

Manufacturer data: Open Icecat

Product description

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. ASUS Corporate Stable Model ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and…

Read more

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Optimize IT endpoint management

Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely.

Automate IT maintenance

Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility.

Securely manage all of endpoints

Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices.

Performance

AI Solutions

ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.

AI Advisor

ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.7

Performance

Digital Power Design

PRIME B840M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.5

The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.

The Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.

Enhanced Memor

Frequently asked questions

Where is Asus AM5 Prime B840M-A-CSM M-atx cheapest?

Right now at PCHUB.UK for £119.18. We compare 2 offers.

How much does Asus AM5 Prime B840M-A-CSM M-atx cost?

Prices range from £119.18 to £138.99. Over the last 90 days it cost £119.10 on average.

Is now a good time to buy Asus AM5 Prime B840M-A-CSM M-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 Asus AM5 Prime B840M-A-CSM M-atx in stock?

Yes, 2 shops list it as in stock.

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