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ATX motherboard with black heatsinks and grey PCB

ASUS

ASUS TUF X299 Mark 2 Intel motherboard LGA 2066 128GB DDR4

SKU CH-1E4Y-NY2ZN

ATX motherboard with LGA 2066 socket and Intel X299 chipset supporting up to 128 GB of DDR4 memory

  • CPU socketLGA 2066
  • ChipsetIntel X299
  • Max supported RAM128 GB
  • Supports up to 128GB DDR4 memory capacity
  • LGA 2066 socket fits compatible Intel processors
  • Intel X299 chipset provides platform foundation
  • ATX form factor suits standard chassis builds
  • Includes SATA cable for storage connectivity

ASUS TUF X299 Mark 2 LGA 2066

This ASUS TUF X299 Mark 2 is an ATX motherboard built for the Intel X299 chipset and LGA 2066 socket. It supports DDR4 memory up to a maximum capacity of 128GB across its available slots. The board targets builders assembling high-core-count workstations or enthusiast desktops.

Suited for X299 workstation builds.

This motherboard suits users who specifically need the LGA 2066 platform and X299 feature set for multi-threaded workloads. It will not fit CPUs designed for different sockets or chipsets. Buyers with other processor families should look at boards matching their specific socket.

Maximum DDR4 capacity is 128GB

The decisive specification is the 128GB DDR4 memory ceiling. If your workload requires more than 128GB of system memory, this board cannot meet that requirement. Verify your memory kit configuration matches this limit before purchase.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $310.99
Pricier than about 90% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Model nameASUS TUF X299 Mark 2
Processor
CPU socketLGA 2066
ChipsetIntel X299
Memory
Max supported RAM128 GB

Questions about this item

Will the LGA 2066 socket accept the same cooler mounting pattern as my previous X299 board?

The LGA 2066 socket keeps the standard mounting hole spacing so existing coolers for this platform fit without new brackets.

How can I confirm the DDR4 memory controller is running all channels after I populate the slots?

Enter the BIOS and check the memory information screen — it lists each populated channel and the total capacity up to 128GB.

The listing mentions only a SATA cable and I/O shield — do I need to buy a CMOS battery separately?

A metal battery is included in the package, so no separate CMOS cell is required.

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