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Comet Lake µarch
General Info
Arch Type	CPU
Designer	Intel
Manufacturer	Intel
Process	14 nm
Core Configs	2, 4, 6, 8
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	Coffee Lake U, Coffee Lake H, Coffee Lake S
Succession
Coffee Lake Ice Lake
Contemporary
Whiskey Lake

Comet Lake (CML) is a microarchitecture designed by Intel as a successor to Coffee Lake for desktops and high-performance mobile devices. Comet Lake will be introduced in in 2019 and is manufactured on Intel's mature 14 nm process.

Preliminary Data! Information presented in this article deal with future products, data, features, and specifications that have yet to be finalized, announced, or released. Information may be incomplete and can change by final release.

Codenames

Core	Abbrev	Description	Graphics	Target
Comet Lake U	CML-U	Ultra-low power	GT2	Light notebooks, portable All-in-Ones (AiOs), Minis, and conference room
Comet Lake H	CML-H	High-performance graphics	GT3e	Ultimate mobile performance, mobile workstations
Comet Lake S	CML-S	Mainstream performance	GT2	Desktop performance to value, AiOs, and minis
Comet Lake X	CML-X	Extreme Performance		High performance desktops

Brands

Intel released Coffee 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

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Architecture

Key changes from Coffee Lake

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