• – Thermal Armor & M.2 Heatsink – Thermal armor directs cool air towards vital components while the 40mm fan and M.2 heatsink help reduce SSD temperatures by up to 25° C.
  • – TUF Fortifier, SafeSlot & VGA Holder – Reinforced backplate adds structural rigidity, while SafeSlot fortified PCIe and TUF VGA holder support the weight of heavy graphics cards.
  • – Thermal Radar 3 & TUF Ice – Designed to keep systems stable while overclocking, Thermal Radar 3 delivers complete system cooling control and temperature monitoring options
  • – Pro Clock II & T-Topology – Our Pro Clock II technology provides flexibility for fine-tuning system overclocks, while T-Topology enhances memory stability at higher frequencies
  • – TUF Detective 2 – The TUF Detective 2 app connects via Bluetooth to track information, detect/diagnose errors, or adjust vital system settings without booting up!
  • – ASUS Aura Sync: Synchronize RGB lighting effects across an ever-expanding ecosystem of Aura Sync-enabled products


ASUS TUF X299 MARK 1 LGA 2066 ATX Motherboard



Compatible ProcessorsIntel Core X-series
SocketLGA 2066
ChipsetIntel X299
Memory Slots8 x DIMM, Max. 128 GB DDR4 4133(O.C.)/4000(O.C.)/3600(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory
Intel Core X-series processors with 6 cores or above can populate all eight banks
Intel Core X-series processors with 4 cores populate four banks
Expansion Slots44-lane CPUs
3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8)
2 x PCIe 3.0 x4 (max at x4 mode)
28-Lane CPUs
3 x PCIe 3.0/2.0 x16 (x16, x16/x8, x16/x8/x4)
2 x PCIe 3.0 x4 (max at x4 mode)
16-Lane CPU
3 x PCIe 3.0/2.0 x16 (x16, x8/x8, x8/x8/x1)
2 x PCIe 3.0 x4 (max at x4 mode)
Supports NVIDIA 4, 3, 2-Way SLI technology
Supports AMD 4, 3-Way CrossFireX technology
AudioRealtek ALC S1220A
Back I/O Ports1 x Intel I219V Gigabit Ethernet port
1 x Intel I211 Gigabit Ethernet port
1 x USB 3.1 Type-A
1 x USB 3.1 Type-C
4 x USB 3.0 Type-A
4 x USB 2.0 Type-A (one port can be switched to USB BIOS Flashback)
1 x Optical S/PDIF out
5 x Audio jacks
1 x USB BIOS Flashback Button
1 x TUF Detective USB port
Internal I/O Connectors1 x AAFP connector
1 x Aura RGB Strip header
2 x USB 3.0 headers (support additional 4 USB 3.0 ports)
1 x USB 2.0 header (supports additional 2 USB 2.0 ports)
1 x USB 3.1 front panel connector
1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x4 mode)
1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x4 mode)
1 x COM header
8 x SATA 6 Gb/s connectors
1 x CPU Fan connector
1 x CPU OPT Fan connector
5 x Chassis Fan connectors
1 x Assistant Fan connector
1 x H_AMP fan connector
1 x W_PUMP+ connector
1 x Thunderbolt header
1 x 24-pin EATX Power connector
1 x 8-pin ATX 12 V Power connector
1 x 4-pin ATX 12 V Power connector
1 x System panel (Q-Connector)
1 x MemOK! button
3 x Thermal sensor connectors
1 x Power-on button
1 x Clear CMOS jumper
1 x CPU_OV jumper
Supported Operating SystemWindows 10
Form FactorATX
Dimensions12 x 9.6″ / 30.5 x 24.4 cm
Packaging Info
Package Weight5.45 lb
Box Dimensions (LxWxH)13.6 x 10.7 x 3.2″