TUF X299 Mark 1 is the durable ATX motherboard made for enthusiasts, modders and gamers who demand reliable performance day in, day out.
Totally cool, across the board
TUF X299 Mark 1 has been carefully designed to boost airflow and heat dissipation to keep the temperature of vital components as cool as can be.
Improves rigidity and cooling behind the board
TUF X299 Mark 1 delivers great strength and cooling via an exclusive TUF Fortifier - a reinforced backplate which adds structural rigidity across the board to ensure the motherboard doesn't buckle under the weight of heavy graphics cards and CPU coolers, minimizing the risk of damaged circuitry from bowing and bending.
TUF X299 Mark 1 features a VGA holder that eliminates ugly and potentially damaging graphics card sag by supporting the motherboard to prevent bowing and bending. TUF VGA holder is crafted from a single piece of strong sheet metal and provides serious support for even heavy graphic card!
Repel dust, extend lifespan
TUF X299 Mark 1 has unique dust defenders to prevent dust and other airborne particles from entering the motherboard's PCI Express expansion slots, helping your PC perform in an optimal and stable state for longer.
Make your memory go faster
ASUS T-Topology allows memory frequencies that are higher than ever. ASUS-exclusive T-Topology circuit design provides superb memory-overclocking capability to unleash the full power of DDR4 by minimizing coupling noise and signal reflection. Refined manufacturing ensures ultra-consistent quality, minimal crosstalk between custom trace paths, and time-aligned signaling for superior stability and compatibility.
ASUS TUF X299 MARK 1 - motherboard - ATX - LGA2066 Socket - X299
Motherboard - ATX
Intel X299 Express
1 x LGA2066 Socket
Max RAM Size
8 DIMM slots - DDR4, non-ECC, unbuffered
8 x SATA-600 (RAID), 2 x M.2
USB / FireWire Ports
USB 3.1 Gen 1, USB-C Gen2, USB 3.1 Gen 2 1 x USB-C Gen 2 + 1 x USB 3.1 Gen 2 + 4 x USB 3.1 Gen 1 + 4 x USB 2.0 + (1 x USB 3.1 Gen 2 + 4 x USB 3.1 Gen 1 + 2 x USB 2.0 via headers)
DTS Connect, High Definition Audio, DTS Headphone:X
Intel I219V / I211
2 x Gigabit Ethernet
Expansion / Connectivity
1 x CPU , 8 x DIMM 288-pin , 3 x PCIe 3.0 x16 (44-lane CPU (x16, x16/x16, x16/x16/x8 modes), 28-lane CPU (x16, x16/x8, x16/x8/x4 modes), 16-lane CPU (x16, x8/x8, x8/x8/x1 modes)) , 2 x PCIe 3.0 x4
SATA-600 -connectors: 8 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 / RAID 5 , SATA-600 / PCIe 3.0 -connectors: 1 x M.2 , PCIe 3.0 -connectors: 1 x M.2
Intel Smart Response Technology
2 x LAN (Gigabit Ethernet) , 4 x USB 3.1 Gen 1 , 4 x USB 2.0 , 1 x TOSLINK , 1 x USB 3.1 Gen 2 , 1 x audio line-out - mini-jack , 1 x microphone - mini-jack , 1 x audio line-out (center/subwoofer) - mini-jack , 1 x audio line-out (rear) - mini-jack , 1 x audio line-in - mini-jack , 1 x USB-C Gen2
2 x USB 2.0 - header , 4 x USB 3.1 Gen 1 - header , 1 x serial - header , 1 x Thunderbolt - header , 1 x USB 3.1 Gen 2 - header
4-pin ATX12V connector, 24-pin main power connector, 8-pin ATX12V connector
WfM 2.0 support, Multilingual BIOS, USB BIOS Flashback, UEFI BIOS, ASUS EZ Flash 3, DMI 3.0 support, SMBIOS 3.0 support, ACPI 6.0 support