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Comet Lake µarch
General Info
Arch Type	CPU
Designer	Intel
Manufacturer	Intel
Process	14 nm
Core Configs	4
Pipeline
Type	Superscalar, Superpipeline
OoOE	Yes
Speculative	Yes
Reg Renaming	Yes
Stages	14-19
Decode	5-way
Instructions
ISA	x86-64
Extensions	MOVBE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, POPCNT, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA3, F16C, BMI, BMI2, VT-x, VT-d, TXT, TSX, RDSEED, ADCX, PREFETCHW, CLFLUSHOPT, XSAVE, SGX, MPX
Cache
L1I Cache	32 KiB/core 8-way set associative
L1D Cache	32 KiB/core 8-way set associative
L2 Cache	256 KiB/core 4-way set associative
L3 Cache	2 MiB/core Up to 16-way set associative
L4 Cache	128 MiB/package on Iris Pro GPUs only
Cores
Core Names	Comet Lake U, Comet Lake S
Succession
Coffee Lake Whiskey Lake Ice Lake

Comet Lake (CML) is a planned microarchitecture designed by Intel as a successor to Coffee Lake and Whiskey Lake for desktops, high-performance mobile devices, and ultra-low power mobile devices.

Codenames

Core	Abbrev	Description	Graphics	Target
Comet Lake S	CML-S	Mainstream performance	GT2	Desktop performance to value, AiOs, and minis
Comet Lake U	CML-U	Ultra-low power	GT2	Light notebooks, portable All-in-Ones (AiOs), Minis, and conference room

Brands

Intel is expected to release Comet Lake under 3 main brand families:

Logo	Family	General Description	Differentiating Features
			Cores	HT	AVX	AVX2	TBT	ECC
	Core i3	Low-end Performance
	Core i5	Mid-range Performance
	Core i7	High-end Performance

Release Dates

Comet Lake is expected to be released in mid-2019.

Compatibility

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Compiler support

Compiler	Arch-Specific	Arch-Favorable
ICC	-march=skylake	-mtune=skylake
GCC	-march=skylake	-mtune=skylake
LLVM	-march=skylake	-mtune=skylake
Visual Studio	/arch:AVX2	/tune:skylake

CPUID

This section is empty; you can help add the missing info by editing this page.

Architecture

Key changes from Coffee Lake

New vulnerabilities