ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX – 054720
- Price £129.33 at 1 shop
- No. 5205 of 40,740 in PC components
Variant: B850M-A-CSM B850 AM5 micro – 054720
-
B850M-A-CSM B850 AM5 micro – 054720 £129.33 -
B850M-A-CSM B850 AM5 micro – 054706 £150.99 -
B850M-K B850 AM5 micro £106.23 -
B650M-A II-CSM B650 AM5 micro £138.64 -
B850M-A WIFI B850 AM5 micro £120.86 -
B550M-A/CSM B550 AM4 micro £94.94 -
B850M-F WIFI B850 AM5 micro £98.49 -
B850-PLUS-CSM B850 AM5 £142.02 -
B550M-A B550 AM4 micro £166.83 -
A520M-A II/CSM A520 AM4 micro £56.82 -
B840M-R B840 AM5 micro £81.47 -
B840M-K B840 AM5 micro £97.56
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-
£129.33Go to shop: PCHUB.UK
Prices include VAT, last checked 10 October at 00:58. 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
- £129.33
- Lowest
- £129.10
- Average
- £129.24
- Highest
- £129.33
Product details
| Brand | Asus |
|---|---|
| Category | PC components |
| Barcode (EAN) | 4711636054720 |
| 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
9
| Supported memory types | DDR5-SDRAM |
|---|---|
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | ECC & Non-ECC |
| Supported memory clock speed (max) | 8000 MHz |
| Maximum internal memory | 256 GB |
| Unbuffered memory | Yes |
| Maximum internal memory per slot | 64 GB |
Storage controllers
6
| Supported storage drive types | HDD & SSD |
|---|---|
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0 |
| Number of HDDs supported | 4 |
| Number of storage drives supported | 7 |
| RAID support | Yes |
| RAID levels | 0, 1, 5, 10 |
Graphics
2
| Parallel processing technology support | Not supported |
|---|---|
| Maximum resolution | 7680 x 4320 pixels |
Internal I/O
19
| USB 2.0 connectors | 2 |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of CPU fan connectors | 1 |
| Number of chassis fan connectors | 3 |
| Chassis intrusion connector | Yes |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| EPS power connector (8-pin) | Yes |
| Number of EPS power connectors (8-pin) | 1 |
| Number of COM connectors | 1 |
| TPM connector | Yes |
| 12V power connector | Yes |
| RGB LED pin header | Yes |
| Number of RGB LED pin headers | 3 |
Rear panel I/O ports
11
| USB 2.0 ports quantity | 4 |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 2 |
| DisplayPort version | 1.4 |
| Headphone outputs | 1 |
| Line-in | Yes |
| Microphone in | Yes |
Network
4
| Ethernet LAN | Yes |
|---|---|
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Wi-Fi | No |
| Top Wi-Fi standard | Not available |
Features
9
| Motherboard chipset | AMD B850 |
|---|---|
| Audio output channels | 7.1 channels |
| Product colour | Grey |
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Cooling type | Passive |
| Power source type | ATX |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
Expansion slots
11
| PCI Express x16 (Gen 4.x) slots | 2 |
|---|---|
| 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 | 4.0 |
| 3rd M.2 largest key size | 2280 |
| 3rd M.2 highest PCI Express generation | 4.0 |
| 4th M.2 largest key size | 2280 |
| 4th M.2 highest PCI Express generation | 4.0 |
BIOS
2
| BIOS type | UEFI AMI |
|---|---|
| BIOS memory size | 256 Mbit |
Packaging data
4
| Package width | 275 mm |
|---|---|
| Package depth | 275 mm |
| Package height | 67.5 mm |
| Package weight | 1.45 kg |
Weight & dimensions
2
| Width | 244 mm |
|---|---|
| Depth | 244 mm |
Packaging content
2
| Cables included | SATA |
|---|---|
| Screws included | Yes |
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 B850M-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 B850M-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.
Performance
Digital Power Design
PRIME B850M-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.
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 Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.
Enhanced Memory & Storage Performance
Enhanced DDR5 performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-A-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.2
For entry-level modules without EXPO™ support, ASUS Enhanced Me
Frequently asked questions
Where is ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX – 054720 cheapest?
Right now at PCHUB.UK for £129.33. We compare one offer.
How much does ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX – 054720 cost?
Currently £129.33.
Is now a good time to buy ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX – 054720?
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 PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX – 054720 in stock?
Yes, one shop lists it as in stock.
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