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Rectangular ATX motherboard with black PCB, silver heatsinks and eight DDR4 slots

ASRock

ASRock X299 Taichi CLX LGA 2066 Intel Motherboard

SKU CH-PG1M-6JYDZ

ATX board for LGA 2066 Intel Core X-Series CPUs with X299 chipset, eight DDR4 slots up to 256 GB quad-channel, four PCIe 3.0 x16 slots, two Ultra M.2 sockets, eight SATA3 ports.

  • ProcessorSupports Intel Core X-Series Processor Family for the LGA 20
  • ChipsetIntel X299
  • Form factorATX
  • CPU socketLGA 2066
  • CPU technologiesTurbo Boost Technology 3.0
  • Memory slot count8 × 288pin (DDR4)
  • Supports Intel Core X-Series processors via LGA 2066 socket
  • Quad-channel DDR4 memory up to 256GB capacity
  • Four PCI Express 3.0 x16 slots for multi-GPU configurations
  • Three Ultra M.2 sockets with up to 32Gb/s bandwidth
  • Realtek ALC1220 codec delivers 7.1-channel high-definition audio

X299 Taichi CLX LGA 2066 motherboard

This ATX board uses the Intel X299 chipset and an LGA 2066 socket for Intel Core X-Series processors including Cascade Lake-X and Skylake X refresh models. It targets workstations and high-end desktops that need many cores and quad-channel memory bandwidth.

Compatibility checks before ordering

Verify that your processor is a supported Core X-Series model for LGA 2066 and that your power supply provides the necessary CPU and 24-pin connectors for this platform. Ensure your case fits ATX dimensions and that your DDR4 modules are non-ECC un-buffered types.

Bundled WiFi 802.11ax module

A vertical M.2 Key E socket ships with a WiFi 802.11ax module that mounts on the rear I/O panel, adding wireless connectivity without using a PCIe slot. The board also includes 15µ gold contacts on the primary and third PCI Express 3.0 x16 slots for improved GPU signal integrity.

How it compares

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

Price $357.99
Pricier than about 90% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASRock
Model nameX299 TAICHI CLX
Processor
ProcessorSupports Intel Core X-Series Processor Family for the LGA 2066 Socket (Cascade Lake-X, Skylake X Refresh and Skylake X)
CPU socketLGA 2066
ChipsetIntel X299
CPU technologiesTurbo Boost Technology 3.0
Memory
Memory slot count8 × 288pin (DDR4)
Supported memorySupports DDR4 4200+(OC)*/ 4000(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3200(OC)/ 2933(OC)/ 2800(OC)/ 2666/ 2400/ 2133 non-ECC, un-buffered memory
* The maximum memory frequency supported may vary by processor type.
Max supported RAM256 GB
Memory channelsQuad Channel
Storage
SATA ports8 x SATA3 6.0Gb/s Connectors, support RAID NCQ, AHCI and Hot Plug*
2 x SATA3 6.0Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug
* If M2_3 is occupied by a SATA-type M.2 device, SATA3_7 will be disabled.
M.2 slots2 x Ultra M.2 Sockets (M2_1 and M2_2), support M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s)**
1 x Ultra M.2 Socket (M2_3), supports M Key type 2242/2260/2280/22110 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s)**
** Supports Intel Optane Technology
** Supports PCIe RAID
** Supports NVMe SSD as boot disks
Optane memory supportYes
SATA and RAID supportRAID 0, RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology 17 and Intel Smart Response Technology
Graphics
Onboard video chipNone
Audio & video
Audio chipRealtek ALC1220
Sound channels7.1 Channels
Connectivity
Ethernet controllerDragon RTL8125AG
Second LAN controllerIntel I219 V
Maximum network speed2.5 Gbit/s + 1 Gbit/s
Wi-Fi standardIntel 802.11 ax Wi-Fi Module
Supports IEEE 802.11 a/b/g/n/ax
Supports Dual-Band (2.4/5 GHz)
Supports high speed wireless connections up to 2.4 Gbit/s
2 antennas to support 2 (Transmit) x 2 (Receive) diversity technology
Supports MU-MIMO
Bluetooth supportSupports Bluetooth 5.0 + High speed class II
Ports & slots
PCIe x1 slots1 x PCI Express 3.0 x1 Slot
Additional slots1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ax module (on the rear I/O)
15µ Gold Contact in VGA PCIe Slot (PCIE1 and PCIE3)
Power
Power connectors1 × 24-pin ATX Power Connector (Hi-Density Power Connector)
2 × 8-pin 12 V Power Connectors (Hi-Density Power Connector)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
More details
LightingRGB

Questions about this item

Does the ASRock X299 Taichi CLX include a Wi-Fi module or must I buy one separately?

A WiFi-802.11ax module is bundled and installs in the vertical M.2 Key E socket on the rear I/O, so no separate wireless card is required.

Should I choose DDR4 4200 or a lower speed such as 3200 for this board?

The board supports DDR4 up to 4200+(OC) and all listed speeds down to 2133; the maximum stable frequency depends on the specific Core X-Series processor installed.

What does the 256 GB maximum memory mean when I populate all eight slots?

With eight 288-pin DDR4 slots running in quad-channel mode, you can install up to 256 GB total using 32 GB modules, provided the CPU supports that capacity.

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