ASUS Prime 300 Series motherboards provide the solid foundation needed for your first build, plus flexibility to grow with your ambitions. We've melded all the good stuff that's packed into the latest 8th Generation Intel® Core™ processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime 300 Series motherboard, you build smart, easy and affordably.
Tune it your way
Improved DDR4 stability
ASUS OptiMem preserves memory signal integrity by routing traces and vias to the optimal PCB layer, and our T-Topology trace layout ensures time-aligned signaling by balancing trace lengths between memory slots. These enhancements allow the Prime 300 Series to support a wide range of dual and quad-DIMM memory kits, while providing your rig with the stability it needs to deal with any type of workload - whether you're gaming or running intensive applications
A larger signal eye results in improved stability, more overclocking headroom, and lower operating voltages
ASUS OptiMem advantage:
ASUS OptiMem
53.12 V*pS
Reference design
72.51 V*pS
26%
Reduction in crosstalk
ASUS OptiMem benefits:
Improved memory stability and compatibility
Allows lower memory latencies at equivalent voltages
Improved memory frequency margin
Tested by using Synopsys HSPICE simulation software
EPU
Fan Xpert
All-round energy efficiency
With the Energy Processing Unit (EPU) you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode — a smart setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers.
Flexible cooling controls
Prime 300 Series motherboards offer comprehensive control over system fans, via the included Fan Expert software. Auto-Tuning mode intelligently configures all parameters with a single click.
Cooler by design
Prime 300 Series features the most comprehensive cooling controls ever, configurable via ASUS Fan Xpert software or the UEFI BIOS.
Multiple temperature sources
4-pin PWM/DC fan
Each header can be set to monitor and react to up to three thermal sensors. Via Fan Xpert, you can also assign a sensor to monitor the temperature of supported ASUS graphics cards to ensure optimal cooling during GPU- or CPU-intensive workloads.
* Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
Media-acclaimed UEFI BIOS
The UEFI BIOS is an early waypoint on any PC-building journey, and Prime 300 Series has one of the best in the business.
Q-Fan ControlCan configure the fan's operating speed manually, or use the easy pre-configured fan profiles to select Standard, Silent, Turbo or Full Speed modes, plus automatic switch to full speed if the temperature hits 75°C.
Search FunctionWhen you're ready for a deeper dive, Advanced mode enables full control over every aspect of the motherboard — with a built-in Search function to find the setting you need in the blink of an eye.
Learn more
Ultrafast connectivity
USB 3.1 Gen 1 front-panel connector
Future-proof connectivity
USB 3.1 Gen 1 is right where you need it, with two super-speed headers for the front panel. Experience data-transfer speeds up to 10X faster than USB 2.0 with instant plug-and-play connectivity, and avoid back-breaking contortions in the hunt for hard-to-reach rear ports.
* Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
Reliable stability and compatibility
Built to Last
ASUS is the world's leading motherboard brand. Our motherboards are extensively tested for compatibility with more than 1,000 components and devices, and each new model undergoes a minimum of 8,000 hours of strict validation — offering the peace of mind of knowing that your ASUS motherboard is fit for all environments and applications. Choosing ASUS is an assurance of trouble-free DIY experiences.
5X
Protection III
Hardware safeguards to ensure long-term durability.
520+
DDR4 compaibility
Industry-leading DDR4 memory compatibility for btest flexibility and reassurance.
1000+
compatible devices
Compatibility with a range of CPUs, memory modules, graphics cards and more.
8000+
validation hours
Extensive testing with latest components for enhanced reliability, compatibility and safety.
Prime 300 Series motherboards are engineered with industry-leading 5X Protection III, employing the finest components, excellent circuit design and exacting standards to guarantee the quality and long-term durability of your investment. That means exceptional protection and stability for your build — thanks to decades of engineering experience from the world's leading motherboard brand.
1000+
Compatible devices and components
The superior compatibility of Prime 300 Series is evidenced by our extensive list of supported devices — which includes thousands of compatible components — and our Qualified Vendor List (QVL) that identifies memory compatibility. It all adds up to more choices for worry-free PC-building experiences.
8000+
VALIDATION HOURS
ASUS motherboards offer superb endurance. We verify this by subjecting every board to more than 8,000 hours of stringent tests. A barrage of burn-in, environmental, compatibility, software and safety tests confirm that our motherboards are exceptionally robust. It also shows that ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
Separates analog/digital signal domains, significantly reducing multi-lateral interference.
Separate layer for left and right tracks
Ensures minimal crosstalk between audio paths.
Premium Japanese audio capacitors
Premium parts provide an immersive sound signature, with exceptional fidelity.
* Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
Intel H310 chipsetThe Intel® H310 is a single-chipset design that supports 8th Generation Intel® Core™ LGA1151 processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. Additionally, the H310 chipset provides a maximum of four USB 3.1 Gen 1 ports, four SATA 6Gbps ports, and 10Gbps M.2 and PCIe 2.0 lane-speed support, for faster data retrieval. Intel H310 also supports integrated-graphics, so you'll enjoy the very latest in graphics performance.
Ready for Socket 1151 for 9th / 8th Gen Intel® Core™, Pentium® Gold and Celeron®processorsThis motherboard supports Socket 1151 for 9th Gen and 8th Gen Intel® Core™, Pentium® Gold and Celeron® processors, with integrated graphics, memory and PCI Express controllers to support onboard graphics output with dedicated chipsets, dual-channel (4-DIMM) DDR4 memory and 16 PCI Express 3.0/2.0 lanes for great performance.
Asus Intel B250 ATX (9.6" x 8.1") motherboard with LED lighting, DDR4 2400MHz, dual M.2, Intel Optane memory ready, HDMI, SATA 6Gb/s, USB 3.0
Previous
EPU
Fan Xpert
Multiple temperature sources
4-pin PWM/DC fan