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256 GB DDR4 SDRAM Maximum RAM - UDIMM, DIMM - 8 x Memory Slots - Gigabit Ethernet - 8 x SATA Interfaces
$267.34
Special order — estimated available by September 10, 2026.
Genuine ASUS Computer International through authorized distribution — TAA country-of-origin verified and NDAA §889 screened before checkout.
Intel ATX motherboard LGA 2066 for Intel Core X-series processors, with AI Overclocking, 12 IR3555 power stages, DDR4 4266 MHz, Triple M.2, USB 3.2 Gen 2 Type-C and Aura Sync RGB lighting
• Intel LGA 2066 socket: Ready for the latest Intel® Core? X-series processors
• AI Overclocking: Quickly optimizes your CPU performance based on the CPU and cooler, achieving results that are extremely close to manual tuning by experts
• Robust power design: 12 IR3555 power stages, ProCool II connectors, alloy chokes and ultra-durable capacitors for stable power delivery
• M.2 heatsink: Ultra-efficient heatsink reduces M.2 SSD temperatures by up to 20° C for unthrottled transfer speeds and enhanced reliability
• Next-gen connectivity: Intel Optane memory ready, Intel® VROC support, dual M.2 support, and USB 3.2 Gen Type-C?
PRIME
The Prime X299-A II caters to users with serious pursuits: Those who prefer to put their high-core-count processors to more productive use. This high-end desktop board combines cutting-edge performance with our signature features, including an enhanced VRM tailored for running the CPU performance at stock speeds, intuitive cooling control, next-gen connectivity, and extensive customization.
Get the most out of all your cores
Intel®'s high-end desktop platform raises the stakes with updated Intel Core X-Series Processors that boast cores, cache, and bandwidth. The Prime X299-A II is ready for the additional processing power that plows through CPU-intensive tasks, and the extra bandwidth allows you to add more GPUs and NVMe SSDs to accelerate a wide range of work.
Robust Power Design
The LGA 2066 socket is compatible with Intel Core X-Series Processors with up to 18 cores, over 44 PCI Express® lanes, and 165-watt thermal design power (TDP). Those specs require serious power, so the Prime X299-A II is equipped with an enhanced power solution that includes 12 power stages that line up neatly along the top edge of the PCB.
ProCool II connector
ProCool II connectors ensure a snug and reliable connection to the EPS 12V power lines. The second-generation features upgrades of metal amour and solid pins for better heat dissipation, as well as a warning LED-display with a BIOS POST message to indicate an improper connection.
PowIRstage MOSFETS
Prime X299-A II VRM is comprised of 12 IR3555 PowIRstages®, each rated to handle 60 amps
Microfine Alloy choke
Each PowIRstage is accompanied by a high-permeability alloy-core choke rated to handle 45 amps.
Make your memory go faster
The X299 platform delivers ample bandwidth on multiple fronts. Its quad-channel memory controller supports up to 256 GB of DDR4 memory across eight slots. With optimized trace layout, the Prime X299-A II can hit memory speeds up to DDR4 4266 MHz or beyond.
Multi-GPU support
Fully loaded takes on a new meaning when you have over 44 PCI Express lanes stemming from the CPU. Those lanes can be split in an x16/x16/x8 configuration spanning the board's trio of PCIe x16 slots, allowing you to load up on GPUs to accelerate an increasingly diverse array of work.
M.2 Achieve speed with onboard M.2
Professional applications require fast solid-state storage, which is why the Prime X299-A II is equipped with three M.2 slots that are compatible with the latest NVMe SSDs. All slots support longer 110 mm drives, and they can be configured into bootable RAID arrays connected directly to the CPU via Intel VROC technology.
Limited Warranty: 3 Year
About ASUS ASUS is a multinational company best known for their motherboards, PCs, monitors, graphics cards and routers. Along with an expanding range of superior gaming, content-creation and AIoT solutions, ASUS leads the industry through cutting-edge design and innovations made to create the most ubiquitous, intelligent, heartfelt and joyful smart life for everyone. With a global workforce that includes more than 5,000 R&D professionals, ASUS is driven to become the world’s most admired innovative leading technology enterprise. About ROG Republic of Gamers (ROG) is an ASUS sub-brand dedicated to creating the world’s best gaming hardware and software. Formed in 2006, ROG offers a complete line of innovative products known for performance and quality, including motherboards, graphics cards, laptops, desktops, monitors, audio equipment, routers and peripherals. ROG participates in and sponsors major international gaming events. ROG gear has been used to set hundreds of overclocking records and it continues to be the preferred choice of gamers and enthusiasts around the world. © 2024 ASUS Computer International. All Rights Reserved. ASUS is a registered trademark of ASUSTeK Computer. All specifications and terms are subject to change without notice. Please check with your supplier for exact offers on selected models. Products may not be available in all markets. Product may not be exactly as shown in photos. Actual colors may differ from their appearance due to variation of monitor restrictions and color processing. All trademarks are registered to their respective companies. ASUS shall not be liable for technical or editorial errors or omissions contained herein.
| Audio | |
|---|---|
| Audio Channels | 7.1 |
| General Information | |
| Manufacturer | ASUS Computer International |
| Manufacturer Part Number | PRIME X299-A II |
| Brand Name | Asus |
| Product Line | Prime |
| Product Model | X299-A II |
| Product Name | Prime X299-A II Desktop Motherboard |
| Product Type | Desktop Motherboard |
| I/O Controller | |
| Controller Type | Serial ATA/600 |
| Intel VROC | Yes |
| Intel RST | Yes |
| Intel RSTe | Yes |
| RAID Supported | Yes |
| RAID Levels | 10, 5, 1, 0 |
| I/O Expansions | |
| Total Number of Expansion Slots | 5 |
| Total Number of PCI Express Slots | 5 |
| Number of PCI Express x1 Slots | 2 |
| Number of PCI Express x16 Slots | 3 |
| Interfaces/Ports | |
| Total Number of USB Ports | 8 |
| Number of USB 2.0 Ports | 2 |
| Number of USB 3.2 Ports | 6 |
| S/PDIF | Yes |
| Memory | |
| Number of Memory Slots | 8 |
| Memory Form Factor | UDIMM, DIMM |
| Maximum Memory Supported | 256 GB |
| Memory Speed Supported | 4266 MHz, 4133 MHz, 4000 MHz, 3866 MHz, 3800 MHz, 3733 MHz, 3600 MHz, 3466 MHz, 3400 MHz, 3333 MHz, 3300 MHz, 3200 MHz, 3000 MHz, 2933 MHz, 2800 MHz, 2400 MHz, 2133 MHz, 2666 MHz |
| Memory Technology | DDR4 SDRAM |
| Intel Optane Memory Ready | Yes |
| Network & Communication | |
| Gigabit Ethernet | Yes |
| Onboard Interfaces | |
| Number of SATA Interfaces | 8 |
| Number of M.2 Interfaces | 3 |
| Total Number of Onboard USB Ports | 9 |
| Number of Onboard USB 2.0 Ports | 4 |
| Number of Onboard USB 3.2 Ports | 5 |
| Physical Characteristics | |
| Form Factor | ATX |
| Width | 12" |
| Depth | 9.6" |
| Processor & Chipset | |
| Chipset Manufacturer | Intel |
| Chipset Model | X299 |
| Total Processor Supported | 1 |
| Processor Socket | Socket R4 LGA-2066 |
| Processor Supported | Core X-Series |
| Multi GPU Supported | CrossFireX, SLI |
| Video | |
| Onboard Video | No |
| Warranty | |
| Limited Warranty | 3 Year |
| Miscellaneous | |
| Package Contents |
|
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
| Country of Origin | China |
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