LGA 2066


LGA 2066, also called Socket R4, is a CPU socket by Intel that debuted with Skylake-X and Kaby Lake-X processors in June 2017. It replaces Intel's LGA 2011-3 in the performance, high-end desktop and Workstation platforms, while LGA 3647 replaces LGA 2011-3 in the server platforms based on Skylake-SP.

Compatible processors

High-End Desktop (HEDT)

All of these CPUs require the Intel X299 chipset to work. So, the C422 chipset is strictly limited to work with workstation processors only.

Kaby Lake-X">Kaby Lake">Kaby Lake-X

Kaby Lake-X processors were discontinued in May 2018. Starting October 2019, BIOS updates for most of the X299-based motherboards removed support for Kaby Lake-X processors.

Skylake-X 7000-series">Skylake (microarchitecture)#High-end desktop processors (Skylake-X)">Skylake-X 7000-series

Skylake-X 9000-series">Skylake (microarchitecture)#High-end desktop processors (Skylake-X)">Skylake-X 9000-series

[Cascade [Lake (microarchitecture)|Cascade Lake-X]]

Workstation

Take note that certain types of Xeon processors will not work on this socket, like Skylake-P. There are four OEM variants that can be found in Apple Mac Pro: W-2140B and W-2150B, W-2170B and W-2191B lack Trusted_Execution_Technology in comparison.

Skylake-W">Skylake (microarchitecture)#Workstation processors">Skylake-W

Cascade Lake-W">Cascade Lake (microarchitecture)#Cascade Lake-W (Workstation)">Cascade Lake-W