Comet Lake

Comet Lake is Intel's codename for its 10th generation Core processors. They are manufactured using Intel's third 14 nm Skylake process revision, succeeding the Whiskey Lake U-series mobile processor and Coffee Lake desktop processor families. Intel announced low-power mobile Comet Lake-U CPUs on August 21, 2019, H-series mobile CPUs on April 2, 2020, desktop Comet Lake-S CPUs April 30, 2020, and Xeon W-1200 series workstation CPUs on May 13, 2020. Comet Lake processors and Ice Lake 10 nm processors are together branded as the Intel "10th Generation Core" family. Intel officially launched Comet Lake-Refresh CPUs on the same day as 11th Gen Core Rocket Lake launch. The low-power mobile Comet Lake-U Core and Celeron 5205U CPUs were discontinued on July 7, 2021.

Generational changes
All Comet Lake CPUs feature an updated Platform Controller Hub with CNVio2 controller with Wi-Fi 6 and external AX201 CRF module support.

Comet Lake-S compared to Coffee Lake-S Refresh
 * Up to ten CPU cores
 * Hyperthreading on all models, except for Celeron
 * Single core turbo boost up to 5.3 GHz (300 MHz higher); all-core turbo boost up to 4.9 GHz; Thermal Velocity Boost for Core i9; Turbo Boost Max 3.0 support for Core i7 and i9
 * DDR4-2933 memory support for Core i7 and i9; DDR4-2666 for Core i3, Core i5, Pentium Gold, Celeron
 * 400-series chipset based on the LGA 1200 socket

Comet Lake-H compared to Coffee Lake-H Refresh
 * Higher turbo frequencies by up to 300 MHz
 * DDR4-2933 memory support
 * Thermal Velocity Boost for Core i7 and i9

Comet Lake-U compared to Whiskey Lake-U
 * Up to six CPU cores
 * Higher turbo frequencies by up to 300 MHz
 * DDR4-2666 and LPDDR3-2133 memory support

One notable architectural change of Comet Lake from its predecessors is removal of TSX instruction set extensions.

Entry-level CPUs like the i3 series no longer support ECC memory.

Comet Lake-S
Pentium and Celeron CPUs lack AVX and AVX2 support.

Comet Lake-W (Workstation)
Comet Lake-W CPUs require the W480 chipset.

Comet Lake-H (High power)
Core i5 CPUs lack Thermal Velocity Boost.

Comet Lake-U (Medium power)
The following SKUs additionally support Intel vPro and LPDDR4-2933 memory: i5-10310U, i7-10610U, i7-10810U.

Pentium and Celeron CPUs lack AVX2 support.

Desktop processors
On March 16, 2021, Intel announced the refreshed models of Comet Lake Core i3 and Pentium Gold processors. These processors have the same characteristics as their original parts, albeit with a 100MHz higher frequency and the last digit changing from zero to five.