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Comet Lake - Microarchitectures - Intel
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Revision as of 10:04, 29 November 2025 by 95.24.48.143 (talk) (All Comet Lake Chips)
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Comet Lake µarch
General Info
Arch TypeCPU
DesignerIntel
ManufacturerIntel
Process14 nm
Core Configs4
Pipeline
TypeSuperscalar, Superpipeline
OoOEYes
SpeculativeYes
Reg RenamingYes
Stages14-19
Decode5-way
Instructions
ISAx86-64
ExtensionsMOVBE, 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 Cache32 KiB/core
8-way set associative
L1D Cache32 KiB/core
8-way set associative
L2 Cache256 KiB/core
4-way set associative
L3 Cache2 MiB/core
Up to 16-way set associative
L4 Cache128 MiB/package
on Iris Pro GPUs only
Cores
Core NamesComet Lake U,
Comet Lake S
Succession

Comet Lake (CML) is Intel's successor to Coffee Lake, an enhanced 14 nm process microarchitecture for mainstream desktops and mobile devices.

For desktop and mobile, Comet Lake is branded as 10th Generation Intel Core i3, Core i5, Core i7, and Core i9 processors.

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 has released Comet Lake under 4 main brand families:

Logo Family General Description Differentiating Features
Cores HT AVX AVX2 TBT ECC
core i3 logo (2015).png Core i3 Low-end Performance Quad
core i5 logo (2015).png Core i5 Mid-range Performance Hexa
core i7 logo (2015).png Core i7 High-end Performance Octa
50px Core i9 Ultra Performance Deca

Release Dates

Comet Lake processors were introduced in a number of phases. Initial mobile processors were launched on August 21, 2019. Intel followed up with the remaining desktop parts on April 30, 2020. Enterprise and vPro models were followed on May 13, 2020.

Compatibility

There are no official drivers by Intel for Windows 7 or Windows 8. Microsoft announced that only Windows 10 will have support for Kaby Lake. Linux added initial support for Kaby Lake starting with Linux Kernel 4.5.

Vendor OS Version Notes
Microsoft Windows Windows 7 No Support
Windows 8 No Support
Windows 10 Support
Windows 11 Support
Linux Linux Kernel 4.5 Initial Support (Fedora 24, Yocto v2.2, ..)
Google Chromium Chromium Support
Wind River VxWorks VxWorks 7 Support

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

Further information: Intel CPUIDs
Core Extended
Family
Family Extended
Model
Model Stepping
U 0 0x6 0xA 0x6 0x0
Family 6 Model 166 Stepping 0
S
H
0 0x6 0xA 0x5 0x0-0x5
Family 6 Model 165 Stepping 0-5
Stepping: G0=0, P0=1, R1=2, G1=3, P1=4, Q0=5
CPUID Dump
  • 000A0652 • 6-Core Intel Core i7-10750H (Comet Lake-H)
  • 000A0654 • 10-Core Intel Xeon W-1290P (Comet Lake) (10C/20T, 3.7-5.3 GHz, 125W)
  • 000A0655 • 6-Core Intel Core i5-10600K (Comet Lake-S)
  • 000A0655 • 8-Core Intel Core i9-10700K (Comet Lake-S) (HTT, MPX, SGX, PKE enabled, TSX disabled)
  • 000A0655 • 10-Core Intel Core i9-10900K (Comet Lake-S)
  • 000A0655 • 10-Core Intel Core i9-10900K (Comet Lake-S, pcHT (per-core HyperThreading) enabled)
  • 000A0660 • 6-Core Intel Core i7-10710U (Comet Lake-U)


Comet Lake-H series (BGA-1440) • Intel UHD Graphics 630 (350 - 1150 MHz)
Intel Core i9-10980HK	2.4 - 5.3 GHz	8 / 16 cores	16 MB L3
Intel Xeon W-10885M	2.4 - 5.3 GHz	8 / 16 cores	16 MB L3
Intel Core i9-10885H	2.4 - 5.3 GHz	8 / 16 cores	16 MB L3
Intel Core i9-10880H	2.3 - 5.1 GHz	8 / 16 cores	16 MB L3
Intel Core i7-10875H	2.3 - 5.1 GHz	8 / 16 cores	16 MB L3
Intel Core i7-10870H	2.2 - 5.0 GHz	8 / 16 cores	16 MB L3
Intel Core i7-10850H	2.7 - 5.1 GHz	6 / 12 cores	12 MB L3
Intel Xeon W-10855M	2.8 - 5.1 GHz	6 / 12 cores	12 MB L3
Intel Core i7-10750H «	2.6 - 5.0 GHz	6 / 12 cores	12 MB L3
Intel Core i5-10500H	2.5 - 4.5 GHz	6 / 12 cores	12 MB L3
Intel Core i5-10400H	2.6 - 4.6 GHz	4 / 8 cores	8 MB L3
Intel Core i5-10300H	2.5 - 4.5 GHz	4 / 8 cores	8 MB L3
Intel Core i5-10200H	2.4 - 4.1 GHz	4 / 8 cores	8 MB L3
Comet Lake-S series (LGA-1200) • Intel UHD Graphics 630 (350 - 1200 MHz)
Intel Core i9-10900K «	3.7 - 5.3 GHz	10 / 20 cores	20 MB L3
Intel Core i7-10700K	3.8 - 5.1 GHz	8 / 16 cores	16 MB L3
Intel Core i7-10700	2.9 - 4.8 GHz	8 / 16 cores	16 MB L3
Intel Core i5-10600K	4.1 - 4.8 GHz	6 / 12 cores	12 MB L3
Intel Core i5-10400F	2.9 - 4.3 GHz	6 / 12 cores	12 MB L3
Intel Core i3-10100F	3.6 - 4.3 GHz	4 / 8 cores	6 MB L3
Comet Lake-U series (BGA-1528) • Intel UHD Graphics 620 (300 - 1150 MHz)
Intel Core i7-10810U	1.1 - 4.9 GHz	6 / 12 cores	12 MB L3
Intel Core i7-10710U «	1.1 - 4.7 GHz	6 / 12 cores	12 MB L3
Intel Core i7-10610U	1.8 - 4.9 GHz	4 / 8 cores	8 MB L3
Intel Core i7-10510U	1.8 - 4.9 GHz	4 / 8 cores	8 MB L3
Intel Core i5-10310U	1.7 - 4.4 GHz	4 / 8 cores	6 MB L3
Intel Core i5-10210U	1.6 - 4.2 GHz	4 / 8 cores	6 MB L3
Intel Core i3-10110U	2.1 - 4.1 GHz	2 / 4 cores	4 MB L3
Intel Pentium Gold 6405U      2.4 GHz	2 / 4 cores	2 MB L3
Intel Celeron 5305U	      2.3 GHz	2 / 2 cores
Intel Celeron 5205U	      1.9 GHz	2 / 2 cores
Comet Lake-Y series (BGA-1377) • Intel UHD Graphics 617 (300 - 1150 MHz)
Intel Core i7-10510Y	1.2 - 4.5 GHz	4 / 8 cores	8 MB L3

Architecture

Key changes from Coffee Lake

  • Enhanced "14nm++" process results in higher turbo frequencies
  • System Architecture
  • Memory
    • Faster memory for mainstream desktops (i.e., Comet Lake S) DDR4-2933 (from DDR4-2666)
  • Packaging

This list is incomplete; you can help by expanding it.

Block Diagram

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Gen9.5

See Gen9.5#Gen9.5.

Memory Hierarchy

The overall memory structure is identical to Skylake.

  • Cache
    • L0 µOP cache:
      • 1,536 µOPs, 8-way set associative
        • 32 sets, 6-µOP line size
        • statically divided between threads, per core, inclusive with L1I
    • L1I Cache:
      • 32 KiB, 8-way set associative
        • 64 sets, 64 B line size
        • shared by the two threads, per core
    • L1D Cache:
      • 32 KiB, 8-way set associative
      • 64 sets, 64 B line size
      • shared by the two threads, per core
      • 4 cycles for fastest load-to-use (simple pointer accesses)
        • 5 cycles for complex addresses
      • 64 B/cycle load bandwidth
      • 32 B/cycle store bandwidth
      • Write-back policy
    • L2 Cache:
      • Unified, 256 KiB, 4-way set associative
      • Non-inclusive
      • 1024 sets, 64 B line size
      • 12 cycles for fastest load-to-use
      • 64 B/cycle bandwidth to L1$
      • Write-back policy
    • L3 Cache/LLC:
      • Up to 2 MiB Per core, shared across all cores
      • Up to 16-way set associative
      • Inclusive
      • 64 B line size
      • Write-back policy
      • Per each core:
        • Read: 32 B/cycle (@ ring clock)
        • Write: 32 B/cycle (@ ring clock)
      • 42 cycles for fastest load-to-use
    • Side Cache:
      • 64 MiB & 128 MiB eDRAM
      • Per package
      • Only on the Iris Pro GPUs
      • Read: 32 B/cycle (@ eDRAM clock)
      • Write: 32 B/cycle (@ eDRAM clock)
    • System DRAM:
      • 2 Channels
      • 8 B/cycle/channel (@ memory clock)
      • 42 cycles + 51 ns latency

Coffee Lake TLB consists of dedicated L1 TLB for instruction cache (ITLB) and another one for data cache (DTLB). Additionally there is a unified L2 TLB (STLB).

  • TLBs:
    • ITLB
      • 4 KiB page translations:
        • 128 entries; 8-way set associative
        • dynamic partitioning
      • 2 MiB / 4 MiB page translations:
        • 8 entries per thread; fully associative
        • Duplicated for each thread
    • DTLB
      • 4 KiB page translations:
        • 64 entries; 4-way set associative
        • fixed partition
      • 2 MiB / 4 MiB page translations:
        • 32 entries; 4-way set associative
        • fixed partition
      • 1G page translations:
        • 4 entries; 4-way set associative
        • fixed partition
    • STLB
      • 4 KiB + 2 MiB page translations:
        • 1536 entries; 12-way set associative
        • fixed partition
      • 1 GiB page translations:
        • 16 entries; 4-way set associative
        • fixed partition


  • Note: STLB is incorrectly reported as "6-way" by CPUID leaf 2 (EAX=02H). Coffee Lake erratum CFL084 recommends software to simply ignore that value.

Overview

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Configurability

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Graphics

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Die

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All Comet Lake Chips

 List of Comet Lake-based Processors
 Main processorFrequenciesMemoryGPUFeatures
ModelLaunchedPriceFamilyPlatformCoreCoresThreadsL3$TDPBaseMax TurboMax MemoryNameBaseBurstTBTHT
Count: 0

Models

Name		Codename	Cores	    Clock	Socket	       Process	L3 Cache TDP	Released

Core i3-10110Y	Comet Lake-Y	2 / 4	1.0 to 4.0 GHz	BGA 1377	14 nm	4 MB	9 W	Aug 2019
Core i5-10210Y	Comet Lake-Y	4 / 8	1.0 to 4.0 GHz	BGA 1377	14 nm	6 MB	9 W	Aug 2019
Core i5-10310Y	Comet Lake-Y	4 / 8	1.1 to 4.1 GHz	BGA 1377	14 nm	6 MB	9 W	Aug 2019
Core i7-10510Y	Comet Lake-Y	4 / 8	1.2 to 4.5 GHz	BGA 1377	14 nm	8 MB	9 W	Aug 2019

Core i3-10110U	Comet Lake-U	2 / 4	2.1 to 4.1 GHz	BGA 1528	14 nm	4 MB	25 W	Aug 2019
Core i5-10210U	Comet Lake-U	4 / 8	1.6 to 4.2 GHz	BGA 1528	14 nm	6 MB	25 W	Aug 2019
Core i7-10510U	Comet Lake-U	4 / 8	1.8 to 4.9 GHz	BGA 1528	14 nm	8 MB	25 W	Aug 2019
Core i7-10610U	Comet Lake-U	4 / 8	1.8 to 4.9 GHz	BGA 1528	14 nm	8 MB	25 W	Apr 2020
Core i7-10710U	Comet Lake-U	6 / 12	1.1 to 4.7 GHz	BGA 1528	14 nm	12 MB	25 W	Aug 2019
Core i7-10810U	Comet Lake-U	6 / 12	1.1 to 4.9 GHz	BGA 1528	14 nm	12 MB	25 W	Apr 2020

Core i5-10200H	Comet Lake-H	4 / 8	2.4 to 4.1 GHz	BGA 1440	14 nm	6 MB	45 W	Sep 2020
Core i5-10300H	Comet Lake-H	4 / 8	2.5 to 4.5 GHz	BGA 1440	14 nm	6 MB	45 W	Sep 2020
Core i5-10400H	Comet Lake-H	4 / 8	2.6 to 4.6 GHz	BGA 1440	14 nm	6 MB	45 W	Apr 2020
Core i7-10750H	Comet Lake-H	6 / 12	2.6 to 5.0 GHz	BGA 1440	14 nm	12 MB	45 W	Apr 2020
Core i7-10850H	Comet Lake-H	6 / 12	2.7 to 5.1 GHz	BGA 1440	14 nm	12 MB	45 W	Apr 2020
Core i7-10870H	Comet Lake-H	8 / 16	2.2 to 5.0 GHz	BGA 1440	14 nm	16 MB	45 W	Sep 2020
Core i7-10875H	Comet Lake-H	8 / 16	2.3 to 5.1 GHz	BGA 1440	14 nm	16 MB	45 W	Apr 2020
Core i9-10885H	Comet Lake-H	8 / 16	2.4 to 5.3 GHz	BGA 1440	14 nm	16 MB	45 W	Apr 2020
Core i9-10980HK	Comet Lake-H	8 / 16	2.4 to 5.3 GHz	BGA 1440	14 nm	16 MB	45 W	Apr 2020

Core i5-110	Comet Lake-S	6 / 12	2.9 to 4.3 GHz	LGA 1200	14 nm	12 MB	65 W	Sep 2025 <<
Core i3-10100	Comet Lake-S	4 / 8	3.6 to 4.3 GHz	LGA 1200	14 nm	6 MB	65 W	Apr 2020
Core i3-10300	Comet Lake	4 / 8	3.7 to 4.4 GHz	LGA 1200	14 nm	8 MB	62 W	Apr 2020
Core i3-10320	Comet Lake	4 / 8	3.8 to 4.6 GHz	LGA 1200	14 nm	8 MB	91 W	Apr 2020
Core i3-10350K	Comet Lake	4 / 8	4.1 to 4.8 GHz	LGA 1200	14 nm	8 MB	91 W	Apr 2020
Core i5-10400	Comet Lake	6 / 12	2.9 to 4.3 GHz	LGA 1200	14 nm	12 MB	65 W	Apr 2020
Core i5-10400F	Comet Lake	6 / 12	2.9 to 4.3 GHz	LGA 1200	14 nm	12 MB	65 W	Apr 2020
Core i5-10500	Comet Lake	6 / 12	3.1 to 4.5 GHz	LGA 1200	14 nm	12 MB	65 W	Apr 2020
Core i5-10600	Comet Lake	6 / 12	3.3 to 4.8 GHz	LGA 1200	14 nm	12 MB	65 W	Apr 2020
Core i5-10600K	Comet Lake	6 / 12	4.1 to 4.8 GHz	LGA 1200	14 nm	12 MB	125 W	Apr 2020
Core i5-10600KF	Comet Lake	6 / 12	4.1 to 4.8 GHz	LGA 1200	14 nm	12 MB	95 W	Apr 2020
Core i7-10700	Comet Lake	8 / 16	2.9 to 4.8 GHz	LGA 1200	14 nm	16 MB	65 W	Apr 2020
Core i7-10700F	Comet Lake	8 / 16	2.9 to 4.8 GHz	LGA 1200	14 nm	16 MB	65 W	Apr 2020
Core i7-10700K	Comet Lake	8 / 16	3.8 to 5.1 GHz	LGA 1200	14 nm	16 MB	125 W	Apr 2020
Core i7-10700KF	Comet Lake	8 / 16	3.8 to 5.1 GHz	LGA 1200	14 nm	16 MB	125 W	Apr 2020
Core i9-10800F	Comet Lake	10 / 20	2.7 to 5.0 GHz	LGA 1200	14 nm	20 MB	65 W	Apr 2020
Core i9-10850K	Comet Lake	10 / 20	3.6 to 5.2 GHz	LGA 1200	14 nm	20 MB	125 W	Jul 2020
Core i9-10900	Comet Lake	10 / 20	2.8 to 5.2 GHz	LGA 1200	14 nm	20 MB	65 W	Apr 2020
Core i9-10900E	Comet Lake	10 / 20	2.8 to 4.7 GHz	LGA 1200	14 nm	20 MB	65 W	Apr 2020
Core i9-10900F	Comet Lake	10 / 20	2.8 to 5.2 GHz	LGA 1200	14 nm	20 MB	65 W	Apr 2020
Core i9-10900K	Comet Lake	10 / 20	3.7 to 5.3 GHz	LGA 1200	14 nm	20 MB	125 W	Apr 2020
Core i9-10900KF	Comet Lake	10 / 20	3.7 to 5.3 GHz	LGA 1200	14 nm	20 MB	125 W	Apr 2020
Core i9-10900TE	Comet Lake	10 / 20	1.8 to 4.5 GHz	LGA 1200	14 nm	20 MB	35 W	Apr 2020

Celeron 5205U	Comet Lake-U	2 / 2	1.9 GHz		BGA 1528
Celeron 5305U	Comet Lake-U	2 / 2	2.3 GHz		BGA 1528
Celeron G5900	Comet Lake	2	3.4 GHz		LGA 1200	14 nm	2 MB	58 W	Apr 2020
Celeron G5920	Comet Lake	2	3.5 GHz		LGA 1200	14 nm	2 MB	58 W	Apr 2020

Pentium Gold 6405U Comet Lake-U 2 / 4	2.4 GHz		BGA 1528
Pentium Gold G6400 Comet Lake-S 2 / 4	4.0 GHz		LGA 1200	14 nm	4 MB	58 W	Apr 2020
Pentium Gold G6500 Comet Lake-S 2 / 4	4.1 GHz		LGA 1200	14 nm	4 MB	58 W	Apr 2020
Pentium Gold G6600 Comet Lake-S 2 / 4	4.2 GHz		LGA 1200	14 nm	4 MB	58 W	Apr 2020

Xeon W-1290	Comet Lake-SP	10 / 20	3.2 to 5.2 GHz	LGA 1200	14 nm	20 MB	80 W	May 2020
Xeon W-1290P	Comet Lake-SP	10 / 20	3.7 to 5.3 GHz	LGA 1200	10 nm	20 MB	125 W	May 2020
Xeon W-1290E	Comet Lake-SP	10 / 20	3.5 to 4.8 GHz	LGA 1200	14 nm	20 MB	95 W	May 2020
Xeon W-1290TE	Comet Lake-SP	10 / 20	1.8 to 4.5 GHz	LGA 1200	14 nm	20 MB	35 W	May 2020

CPUID

406E3 - Skylake-U (BGA1356), Skylake-Y (BGA1515) 
50654 - Skylake-X (LGA2066), Skylake-SP (LGA3647), Skylake-D (BGA2518) 
50655 - Cascade Lake-SP (LGA3647)
50656 - Cascade Lake-SP (LGA3647)
50657 - Cascade Lake-SP (LGA3647), Cascade Lake-X (LGA2066)
5065B - Cooper Lake-SP (LGA4189)
50665 - Hewitt Lake (BGA1667)
50671 - Knights Landing (LGA3647)
506C9 - Apollo Lake (BGA1296)
506CA - Apollo Lake (BGA1296)
506E3 - Skylake-H (BGA1440), Skylake-S (LGA1151)
506E8 - Kaby Lake-S (ES,LGA1151)
506F1 - Denverton (BGA1310) 
60663 - Cannon Lake-U (?), Cannon Lake-Y (?)
606A6 - Ice Lake-SP (LGA4189)
606C1 - Ice Lake-D (BGA2227)
706A1 - Gemini Lake (BGA1090)
706A8 - Gemini Lake Refresh (BGA1090)
706E5 - Ice Lake-U (BGA1526), Ice Lake-Y (BGA1377), Ice Lake-? (Apple, BGA1344)
80650 - Knights Mill (LGA3647)
80665 - Snow Ridge (BGA2106)
80667 - Parker Ridge (BGA2106)
806A1 - Lakefield (BGA1016)
806C1 - Tiger Lake-UP3 (BGA1449), Tiger Lake-UP4 (BGA1598), Tiger Lake-H35 (BGA1449)
806C2 - Tiger Lake-R (BGA1449)
806D1 - Tiger Lake-H (BGA1787)
806E9 - Kaby Lake-U (BGA1356), Kaby Lake-Y (BGA1515), Amber Lake-Y (H0, BGA1515)
806EA - Kaby Lake-R (BGA1356), Coffee Lake-U (BGA1528)
806EB - Whiskey Lake-U (W0, BGA1528)
806EC - Whiskey Lake-U (V0, BGA1528), Comet Lake-U (V0, BGA1528) <<, Amber Lake-Y (V0, BGA1377)
806F6 - Sapphire Rapids (S3, LGA4677)
806F8 - Sapphire Rapids (E5, LGA4677)
90661 - Elkhart Lake (BGA1493)
90672 - Alder Lake-S (C0, LGA1700)
90675 - Alder Lake-S (H0, LGA1700)
906A3 - Alder Lake-H (L0, BGA1744), Alder Lake-P (L0, BGA1744)
906A4 - Alder Lake-U (R0, BGA1744), Alder Lake-U (R0, BGA1781)
906C0 - Jasper Lake (BGA1338)
906E9 - Kaby Lake-H (BGA1440), Kaby Lake-S (LGA1151), Kaby Lake-X (LGA2066), Kaby Lake-G (BGA2270)
906EA - Coffee Lake-S (U0, LGA1151), Coffee Lake-H (U0, BGA1440)
906EB - Coffee Lake-S (B0, LGA1151)
906EC - Coffee Lake-S (P0, LGA1151), Coffee Lake-H (ES, BGA1440)
906ED - Coffee Lake-S (R0, LGA1151), Coffee Lake-H (R0, BGA1440)

A0652 - Comet Lake-H (R1, BGA1440) << (6/165/2)
A0653 - Comet Lake-S (G1, LGA1200) << (6/165/3)
A0655 - Comet Lake-S (Q0, LGA1200) << (6/165/5)
A0660 - Comet Lake-U (A0, BGA1528) << (6/166/0)
A0661 - Comet Lake-U (K1, BGA1528) << (6/166/1)
806EC - Comet Lake-U (V0, BGA1528) << (6/142/12 Y?)

A0671 - Rocket Lake-S (B0, LGA1200)
A06A4 - Meteor Lake-H (C0, BGA2049), Meteor Lake-U (C0, BGA2049), Meteor Lake-UT4 (C0, BGA2551)
A06C1 - Meteor Lake-PS (???, LGA1851)
B0671 - Raptor Lake-S (B0, LGA1700), Raptor Lake-HX (B0, BGA1964)
B06A2 - Raptor Lake-H (J0, BGA1744), Raptor Lake-P (J0, BGA1744)
B06A3 - Raptor Lake-U (Q0, BGA1744)
B06E0 - Alder Lake-N (N0, BGA1264), Twin Lake (???)
B06F2 - Raptor Lake-S (C0, LGA1700), Raptor Lake-HX (C0, BGA1964)
B06F5 - Raptor Lake-S (H0, LGA1700)
C0662 - Arrow Lake-S (B0, LGA1851)
C06F2 - Emerald Rapids (A1, LGA4677)