ASUS PRIME B650M-K
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ASUS PRIME B650M-K
The ASUS Prime series of motherboards is expertly engineered to fully unleash the potential of AMD Ryzen 7000-series processors. The PRIME B650M-K motherboard boasts a robust power design, comprehensive cooling solutions, and intelligent tuning options. It offers users and DIY PC builders a range of performance optimisations through intuitive software and firmware features. The core attribute of the ASUS PRIME series is comprehensive control. The PRIME B650 motherboard provides flexible tools to customise every aspect of your system. These let you fine-tune performance to perfectly match your workflow and maximise productivity.
AMD B650
Chipset
AMD AM5
Socket
mATX (Micro ATX)
Form factor
DDR5
Memory type
2×
Number of RAM slotsKey features of the ASUS PRIME B650M-K motherboard
- AMD AM5 socket ready for AMD Ryzen™ 7000 Series desktop processors
- Ultrafast connectivity including M.2 PCIe 5.0, Realtek 2.5Gbit Ethernet, USB 3.2 Gen 2 ports, and a front USB 3.2 Gen 1 Type-C®
- ASUS OptiMem II provides careful routing of traces and vias, plus ground layer optimisations to preserve signal integrity for improved memory overclocking
- Comprehensive cooling includes a VRM heatsink, M.2 heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+
- Aura Sync RGB lighting with onboard addressable Gen 2 headers and an Aura RGB header for RGB LED strips, easily synced with Aura Sync-capable hardware
Performance boost and power saving
AMD Precision Boost Overdrive (PBO) increases the processor's current and voltage to achieve higher performance when needed, and can leverage the motherboard's robust power delivery for a further performance boost by aggressively tuning parameters. The Power Saving function then offers several settings for easy power consumption optimisation, such as limiting CPU power, dimming the Aura lighting, setting the fan profile to power-saving mode, or switching the integrated power plan in Microsoft Windows.
Flexible cooling and precise power delivery
ASUS Fan Xpert 2+ software provides comprehensive control over fans, enabling automatic tuning of all parameters with a single click. It offers an extremely quiet mode with minimal fan speeds for light tasks and can be controlled via the UEFI BIOS. The Digi+ voltage-regulator module ensures real-time control over voltage droop, automatically switching frequency and power efficiency settings, and lets you fine-tune your CPU for ultimate stability and performance.
UEFI BIOS for easy and advanced tuning
The renowned ASUS UEFI BIOS offers an intuitive EZ Mode with an overview of key settings, a wizard, drag-and-drop functionality, and quick application of essential options, while Advanced Mode provides full control, a search function, intelligent fine-tuning, and a user profile for transferring and sharing configurations. It also includes graphical fan control by dragging a curve with the mouse and an Aura On/Off mode for easy control of RGB lighting or onboard LEDs.
Cooling and stability of PRIME B650M-K motherboards
PRIME B650M-K motherboards are equipped with multiple onboard heatsinks and hybrid fan headers to keep your build cool and stable under intense workloads. The M.2 heatsink prevents throttling on M.2 storage during sustained data transfers and is secured with captive screws that reduce the risk of being dropped or lost during removal. VRM heatsinks and thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance. Comprehensive cooling control is available via Fan Xpert 2+ software or the UEFI BIOS, which enables dynamic temperature adjustment using three thermal sensors on each header. In addition, Fan Xpert 2+ optimises cooling for ASUS graphics cards, ensuring efficient cooling for demanding tasks. An integrated circuit protects each fan header from overheating and overcurrent. The six-layer PCB design ensures effective heat management for critical components and provides more headroom to push CPUs beyond stock speeds.
Performance and readiness
The PRIME B650M-K series is built to handle the high core counts and bandwidth demands of AMD processors. The ASUS PRIME B650M-K motherboard provides all the fundamentals to boost daily productivity. Your system will be ready for action with stable power delivery, intuitive cooling, and flexible data transfer options. A key attribute of PRIME motherboards is their comprehensive memory tuning features. With the PRIME B650M-K, you can unlock the full potential of your DDR5 modules, whether they're from an extreme-speed kit or an entry-level set that would otherwise be locked. The motherboard's trace routing revisions allow modern processors to have unrestricted access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce vias and adds shielding zones that significantly reduce crosstalk.
Fast storage and reliable connectivity
The PRIME B650M-K motherboard offers two M.2 slots. The first supports data transfer speeds of up to 128Gbit/s via PCIe 5.0, which enables faster boot times and application loading from an operating system drive. The PCIe 4.0 slot is designed for the latest graphics cards, providing wide bandwidth and high transfer speeds to handle demanding builds. A full suite of USB ports includes a front USB 3.2 Gen 1 Type-C® with transfer speeds of up to 5Gbit/s, ideal for connecting peripherals. The board also uses Realtek 2.5Gbit Ethernet, which reduces CPU overhead and offers high TCP and UDP throughput for fast, smooth data transfers. The ASUS LANGuard feature provides protection against electromagnetic interference and ensures a more reliable network connection.
Aura Sync and AI noise-cancelling
An enthusiast's system deserves aesthetics to match its performance. ASUS Aura offers full RGB lighting control, allowing you to synchronise the onboard RGB LEDs, strips, and other devices connected to the motherboard's RGB headers. This lighting can be synchronised with a growing portfolio of Aura-capable hardware. Two addressable Gen 2 headers detect the number of LEDs on devices and automatically tailor lighting effects for specific devices. The headers are also backwards-compatible with existing Aura RGB gear. Also available is a two-way AI Noise-Cancelling utility that uses a deep-learning database to reduce background noise, such as mouse clicks or keyboard sounds, ensuring clear audio during games or calls without affecting performance.
Armoury Crate
Within a single intuitive interface, Armoury Crate offers easily customisable Aura Sync RGB settings for every compatible device in your arsenal, plus controls for an ever-expanding family of ASUS products, including keyboard and mouse preferences. Armoury Crate also integrates product registration and a news feed, so you never miss updates interesting to the ASUS community.
Q-LED Core and BIOS FlashBack™
The PRIME B650M-K motherboard is equipped with a Q-LED Core display, which uses LED light patterns during the POST test to help diagnose problems – a fast blink indicates no CPU detected, a slow blink means no VGA, a very slow blink signals no boot device detected, and a solid light means installation is complete. The BIOS FlashBack™ feature then allows for an easy and safe BIOS (UEFI) update via a USB drive, even without a CPU or memory installed.
Protection and durability with SafeSlot Core+ and power design
SafeSlot Core+ is an exclusive ASUS PCIe slot reinforced with stainless steel to protect it from damage. The metal cover is firmly attached to the slot with hooks, and the entire assembly is securely anchored to the PCB with reinforced solder points, providing a safe foundation for heavy graphics cards. Metal inserts ensure proper card alignment during installation, and side panels with hooks firmly hold the slot body. In addition, the motherboard is protected against overvoltage thanks to a design with built-in voltage regulators, which prevent damage caused by high voltages from unstable power supplies. Corrosion-resistant stainless steel back I/O panels, coated with chromium oxide, provide 3× higher corrosion resistance and a longer lifespan compared to standard panels.
Port equipment
Storage
- SATA III ports: 4
- M.2 slots: 2
- M.2 Slot 1 - M.2 PCIe 5.0
- M.2 Slot 2 - M.2 PCIe 4.0
- Features: RAID 0, RAID 1, RAID 10, RAID 5
USB ports
- Internal USB 2.0: 4
- Internal USB 3.2 Gen 1: 2
- Internal USB-C 3.2 Gen 1: 1
- Rear USB 2.0: 1
- Rear USB 3.2 Gen 1: 2
- Rear USB 3.2 Gen 2: 2
- Rear USB-C 3.2 Gen 1: 1
Graphics
- VGA (D-Sub)
- HDMI 2.1
Sound
- Channels: 8
- Rear connectors: Jack
- Internal connectors: S/PDIF
Other
- Rear: RJ-45 (LAN) 2.5Gbps, PS/2, USB 2.0, USB 3.2 Gen 1, USB 3.2 Gen 2
- Power: 24-pin, 8-pin
- Cooling: Number of PWM FAN (4-pin) - 6
- Internal: ARGB LED Header, RGB LED Header, TPM Header, USB 2.0 Header, USB 3.2 Gen 1 Header, USB-C 3.2 Gen 1 Header, M.2 PCIe 5.0, M.2 PCIe 4.0, PCIe 4.0 x16
Choosing a motherboard
When choosing a motherboard, it is important to pay particular attention to the motherboard's socket type, form factor and chipset. These parameters are among the most important and ensure the board's compatibility with the processor, expansion cards and other components. The specific socket will be used to select an adequate processor, while the remaining connectors will be used to select other components for your future PC.Specifications
Socket and chipset
Format & functions
Memory
Advanced parameters
Connectors
Series
Compatibility
Colour
| Code: | ACb650pmk |
| Warranty: | 36 months |
| Links: | Producer's Website: |
| Manufacturer information |
ASUSTek COMPUTER INC. 1F.,No.15, Lide Rd., Beitou Dist., Taipei City 112 Tel: +886-2-2894-3447 Tel: +886-2-2890-7798 https://gr.asus.com/ProductSafety ASUS COMPUTER GmbH Harkortstrasse 21-23 40880 Ratingen Germany, Europe Email: [email protected] ASUS COMPUTER GmbH, Harkortstrasse 21-23, 40880 Ratingen, Germany, Europe, [email protected] ASUS is a symbol of the growth of Taiwan's economy. The firm's beginnings date back to April 2, 1989, when as a small manufacturer of motherboards began his work with a few employees. Today, Asus employs more than 12,500 employees worldwide. ASUS products can be found in almost every category of the information technology marketplace. ASUS is focused on desktops, laptops, phones, optical drives and components. In the manufacture of motherboards, the company is now the dominant player with a staggering 40% market share. 
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