ASUS Prime X299-A II ATX Motherboard with Intel X-Series, 8 DDR4, SLI/XFire, M.2 Heatsink, 12 IR3555 Power and RGB Lighting
The ASUS PRIME X299-A II is an ATX motherboard featuring the Intel X299 chipset and LGA 2066 socket. It supports up to 8 DDR4 memory slots, SLI/XFire for multi-GPU configurations, M
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ASUS Prime X299‑A II ATX Motherboard – A Masterpiece of Performance
The ASUS Prime X299‑A II is engineered to unlock the full potential of Intel’s high‑end Core X series processors. Built around the powerful Intel® X299 chipset, this ATX motherboard delivers unparalleled expandability, robust power delivery, and cutting‑edge connectivity for enthusiasts who demand nothing but the best.
Form Factor & Physical Design
With a standard ATX form factor (305 mm × 244 mm), the board offers ample space for high‑end components. The sleek black finish is complemented by a M.2 heatsink that keeps NVMe drives cool under load, and a dedicated RGB lighting system powered by Aura Sync for stunning visual effects.
Power Delivery – 12 IR3555 Phases
The motherboard features an impressive 12‑phase VRM (IR3555), ensuring stable power to the CPU even during aggressive overclocking. Each phase is reinforced with SafeSlot Core technology, protecting PCIe slots from damage and guaranteeing longevity.
Memory – 8 DDR4 Slots, Up to 4266 MHz
Eight DIMM slots support up to 256 GB of unbuffered DDR4 memory. The board supports a wide range of speeds: 2133–4266 MHz, allowing users to push their systems to the limits. With eight slots, dual‑channel or quad‑channel configurations are fully supported for maximum bandwidth.
Storage – Triple M.2 & Eight SATA III Ports
Three M.2 slots provide blazing fast NVMe storage options: one PCIe 4.0 x4 slot and two PCIe 3.0 x4 slots, all with integrated heatsinks for thermal stability. Additionally, eight SATA III (6 Gb/s) ports support both HDDs and SSDs, giving users flexibility in building high‑capacity storage arrays.
Expansion – PCI Express 3.0 Slots
The board offers three full‑length PCIe x16 slots, supporting up to 4‑way SLI or CrossFireX configurations. Two additional PCIe x1 slots provide extra expansion options for sound cards, network adapters, or other peripherals.
Connectivity – USB 3.2 Gen 2 & Thunderbolt
Four USB 3.2 Gen 1 (Type‑A) ports and two USB 3.2 Gen 2 (Type‑A) ports deliver high‑speed data transfer for external devices. A single Thunderbolt 3 (Type‑C) port offers ultra‑fast connectivity, while the board also includes a dedicated Intel® I219‑V Gigabit Ethernet controller for reliable wired networking.
Audio – Realtek ALC S1220A 7.1‑Channel
The integrated Realtek ALC S1220A audio codec delivers high‑fidelity sound with a full 7.1‑channel output. Front panel audio connectors and headphone jacks provide convenient access for gaming, media consumption, or professional audio work.
BIOS & Firmware – UEFI AMI 128 Mbit
The motherboard runs on a UEFI AMI BIOS with a generous 128 Mbit flash memory, ensuring fast boot times and robust firmware support. The BIOS includes AI overclocking features that automatically optimize voltage, frequency, and cooling settings for peak performance.
Cooling – Passive Design & Fan Headers
A passive cooling architecture keeps the board itself cool, while two CPU fan headers allow users to attach high‑performance cooling solutions. The board also includes a dedicated chassis fan header for case airflow management.
Additional Features – Aura Sync RGB & Smart Protection
The integrated Aura Sync RGB lighting system lets users create synchronized lighting effects across the motherboard, GPU, and other compatible components. The board also incorporates ASUS LANGuard, protecting against LAN surges, lightning strikes, and static‑electricity discharges.
Compatibility – Intel Core X Series & Windows 10
The Prime X299‑A II is fully compatible with the Intel® Core™ X‑series processors (LGA 2066 socket), supporting 14 nm lithography CPUs. It supports all major Windows 10 editions, ensuring seamless integration into any modern PC build.
Summary – The Ultimate Platform for Enthusiasts
From its 12‑phase VRM and expansive memory support to triple M.2 slots and robust networking, the ASUS Prime X299‑A II delivers a complete solution for high‑performance computing. Whether you’re building a multi‑GPU workstation, a gaming rig, or a data‑intensive workstation, this motherboard provides the power, expandability, and reliability required by today’s demanding workloads.
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 233.58 EUR  101.70 EUR  338.86 EUR  420.00 ARS  258.92 EUR  471.17 EUR  440.00 EUR |
| Colors
Predominant colors of the product |
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| Tags | Fan header Power controls Power savings Cooling control Intel X299 Prime X299-A II Dedicated header CPU via Intel Pump headers DC water |
| Identifiers | |
| Brand |  Asus is a Taiwanese electronics company that produces a wide range of products, including laptops, desktops, mobile phones, tablets, and servers. Asus is best known for its laptops, which are often praised for their quality, features, and design. |
| MPN | ASUS PRIME X299-A II |
| ID | 16987979 |
| Dimensions / Weight | |
| Key Features | |
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ACPI version The version of the Advanced Configuration and Power Interface (ACPI) standard that a product supports or implements. It indicates the level of power‑management features, hardware configuration capabilities, and operating‑system compatibility available on the device.
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6.1 |
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Audio chip The model of the audio processing chip integrated into a device, indicating the specific hardware responsible for sound generation and decoding.
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Realtek ALC S1220A |
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Audio output channels Indicates the total number of independent audio channels that a product can produce or process, including sub‑channels such as those used in surround sound configurations (e.g., 5.1, 7.2). The value may be an integer or a decimal to represent fractional channel groups.
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7.1 channels |
| BIOS memory size | 128 Mbit |
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BIOS type The firmware interface used by a computer system to initialize hardware and load the operating system, such as UEFI or legacy BIOS. It indicates whether the motherboard supports modern features like secure boot, fast startup, or compatibility with older operating systems.
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UEFI AMI |
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Compatible processor series List of processor families that the product can support, such as Intel Celeron, Intel Core i5, AMD Ryzen 3, etc. Each value represents a distinct CPU family or brand that is compatible with the hardware platform.
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Intel® Core™ X-series |
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Component for Specifies the type of device or system that the product is intended to be used with, such as a PC, server, notebook, surveillance system, or other electronic equipment. The value represents a single category and can be used to filter or group products by their target platform.
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PC |
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Cooling type The method used to dissipate heat from a component or system, such as active cooling (fans or liquid loops), passive heat sinks, or no active cooling. It indicates whether the product relies on airflow, conduction, or other mechanisms to maintain safe operating temperatures.
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Passive |
| CPU fan connector | Yes |
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Depth The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.
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244 mm |
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Dimensions The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render the visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.
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23 x 39 x 40cm (W x H x D) |
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Drivers included Indicates whether the product comes with drivers included in the package or available for download. A value of "Yes" means that drivers are supplied, while a value of "No" indicates they are not provided and must be obtained separately.
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Yes |
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Ethernet interface type A list of the Ethernet standards that a product supports, such as Fast Ethernet (10/100 Mbps), Gigabit Ethernet (1 Gbps), 2.5 GbE, 10 GbE, and other variants. Each value is a free‑text label describing one supported interface; multiple values are separated by commas when the device offers more than one speed or generation.
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Gigabit Ethernet |
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Ethernet LAN Indicates whether the product includes an Ethernet LAN interface for wired network connectivity, allowing data transmission over RJ‑45 or compatible cables.
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Yes |
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Front panel audio connector Indicates whether the product has an audio connector on its front panel. The value is "Yes" if a front‑panel audio jack or similar input is present, and "No" otherwise.
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Yes |
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Front panel connector Indicates whether the product includes a connector on its front panel. The value can be "Yes" or "No", representing the presence or absence of this port.
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Yes |
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HDD size The physical width of a hard disk drive expressed in inches or centimeters. It indicates the standard size that determines which enclosures, bays, and mounting hardware are compatible with the drive.
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2.5/3.5" |
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Headphone outputs Represents how many separate headphone output ports a product provides, such as the number of 3.5 mm jacks or other audio connectors available for headphones or earphones.
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1 |
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LAN controller The specific model or designation of the LAN (network) controller integrated into a device, such as "Intel I219-V" or "Realtek RTL8111H." This value identifies the exact network interface hardware used for Ethernet connectivity, enabling users to compare performance, compatibility, and support across products.
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Intel® I219-V |
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Maximum internal memory The largest amount of internal random‑access memory that a device can support, expressed as a data size such as megabytes or gigabytes. It indicates the maximum capacity for active processes and multitasking performance.
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256 GB |
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Memory slots type The form factor of the memory module that a product can accept, such as DIMM or SO‑DIMM. It indicates whether the device uses standard desktop RAM modules (DIMM) or smaller laptop‑style modules (SO‑DIMM).
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DIMM |
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Microphone in Indicates whether the product includes at least one built‑in microphone. A value of "Yes" means that the device has an integrated microphone, while "No" indicates it does not.
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Yes |
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Motherboard chipset The model of the motherboard’s chipset, indicating the family of supported processors and integrated features such as I/O interfaces, memory support, and peripheral connectivity.
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Intel® X299 |
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Motherboard chipset family The chipset family identifies the group of integrated circuits that manage communication between a computer’s CPU, memory, and peripheral devices on a motherboard. It indicates the supported processor families, available I/O interfaces, and overall system capabilities, helping users assess compatibility and feature sets for motherboards or other hardware components.
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Intel |
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Motherboard form factor The physical layout and size classification of a motherboard, such as ATX, Micro‑ATX, Mini‑ITX, or other standardized formats. It indicates the dimensions, mounting points, and expansion capabilities that determine compatibility with computer cases and components.
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ATX |
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Non-ECC Indicates whether the memory module does not support error‑correcting code (ECC). A value of Yes means the module lacks ECC protection, while No means it includes ECC functionality.
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Yes |
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Number of chassis fan connectors The total count of electrical connectors on a computer chassis that accept cooling fans. This value indicates how many separate fan units can be attached to the case for airflow management, allowing users to assess cooling capacity and compatibility with their system.
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2 |
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Number of memory slots The count of physical memory slots available on a device for installing RAM modules. It indicates how many separate DIMM sticks can be installed or upgraded, regardless of size or speed.
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8 |
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Parallel processing technology support A list of GPU multi‑processing technologies that the product can support, such as CrossFireX, SLI, NVLink or combinations thereof. Each value represents a distinct configuration that allows multiple graphics cards to work together for improved performance.
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2-Way SLI,3-Way CrossFireX,3-Way SLI,Quad-GPU CrossFireX,Quad-GPU SLI |
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Processor lithography The lithography process defines the minimum feature size that can be etched onto a semiconductor chip, expressed in nanometers (nm). It indicates the manufacturing technology generation and influences performance, power consumption, and integration density of the processor.
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14 nm |
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Processor socket The physical connector used by a processor to attach to a motherboard or other compatible platform. Common examples include LGA 1151, BGA 1440, Socket AM4, and LGA 1200. This attribute indicates the exact socket designation required for proper CPU installation and compatibility.
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LGA 2066 |
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RAID levels A comma‑separated list that specifies the RAID configurations supported by a storage controller or device. Each entry can be a numeric level (e.g., 0, 1, 5, 10) or a special label such as JBOD. This attribute indicates which disk arrangements the system can manage.
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0,1,5,10 |
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Refresh rate The number of times per second that a display updates its image, expressed in hertz (Hz). It indicates the smoothness and responsiveness of motion on the screen; higher rates generally provide a more fluid visual experience.
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60Hz 2Ms Response Time |
| S/PDIF out port | Yes |
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Storage The overall amount of data that can be stored on the product, including both built‑in and any external or removable storage options. It is expressed as a numeric value with an appropriate unit such as GB, MB, or TB, allowing users to compare how much information the device can hold in total.
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4 x SATA III1 x M.2 (2242/2260/2280) - PCIe1 x M.2 (2280) - PCIe1 x M.2 (2280) - PCIe |
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Supported memory clock speeds The operating frequencies that a processor or memory module can run at, expressed in megahertz (MHz) or gigahertz (GHz). This attribute lists all supported clock rates, allowing users to understand the performance range of the component.
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2133,2400,2666,2800,2933,3000,3200,3300,3333,3400,3466,3600,3733,3800,3866,4000,4133,4266 MHz |
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Supported memory types A list of the memory module types that a device can accept or support, such as DDR4 SDRAM, LPDDR3, or other RAM technologies. Each entry represents a distinct memory architecture or generation compatible with the product.
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DDR4-SDRAM |
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Supported storage drive types A list of the types of storage drives that a product can accommodate or use, such as HDD, SSD, or hybrid configurations. Each entry indicates a distinct drive type that is supported by the device’s bays, slots, or external interfaces.
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HDD & SSD |
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Unbuffered memory Indicates whether the memory modules in the product are unbuffered (non‑registered). A value of "Yes" means the device uses standard unbuffered RAM, while "No" indicates that buffered or registered memory is used.
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Yes |
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Wi-Fi Indicates whether the product has built‑in Wi‑Fi capability, allowing it to connect to wireless networks without requiring external adapters or dongles.
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No |
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Width The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
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305 mm |
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