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Coffee Lake µarch
General Info
Arch TypeCPU
DesignerIntel
ManufacturerIntel
IntroductionAugust 21, 2017
Process14 nm
Core Configs4, 6
Pipeline
OoOEYes
SpeculativeYes
Reg RenamingYes
Stages14-19
Decode5-way
Instructions
ISAx86-16, x86-32, x86-64
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 NamesCoffee Lake U, Coffee Lake H, Coffee Lake S
Succession

Coffee Lake (CFL) is a planned microarchitecture by Intel as a successor to Kaby Lake for high-power notebooks in third quarter of 2017. Coffee Lake appears to be a variant of Cannonlake (including all its features) manufactured on Intel's mature 14 nm process. Coffee Lake is said to introduce the first series mainstream hexa-core processors.

Codenames[edit]

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

Brands[edit]

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Release Dates[edit]

2016 to 2018 kaby cannon coffee roadmap.jpg

Early roadmaps indicated Coffee Lake was to be introduced around the second quarter of 2018. In early 2017 Intel announced that 8th generation processors will be available starting from the 3rd quarter of 2017. While the exact reason for the early release is unknown, it seems likely to attribute the move to various market forces, particularly AMD's introduction of Zen and the Ryzen family. Intel is expected to announce 8th generation Coffee Lake models on August 21, 2017.

Technology[edit]

intel 14nm++.png
See also: Broadwell § Process Technology and 14 nm lithography process

Coffee Lake is manufactured on Intel's 3rd generation 14 nm process called "14nm++". The process is the second enhanced version of the first which was used for the Broadwell microarchitecture (first enhanced version was first used for Kaby Lake). The various enhancements improve performance without increasing the capacitance (i.e., active power characteristics). 14nm++ allows for +23-24% higher drive current. Intel claims their 14nm++ process provides 26% more performance for 52% less power.


intel 14nm++ (nmos).png intel 14nm++ (pmos).png


Note that while both "14nm" and "14nm+" used the same transistor geometry, the "14nm++" actually uses a more relaxed contacted poly pitch of 84 nm (from previously 70nm). It's unknown what kind of effect this has on the overall density, if any.

Compatibility[edit]

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Compiler support[edit]

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[edit]

Core Extended
Family
Family Extended
Model
Model
U 0 0x6 0x? 0xE?
Family 6 Model ???
S/H 0 0x6 0x? 0x?
Family 6 Model ???

Architecture[edit]

Not much is known about Coffee Lake's architecture.

Key changes from Kaby Lake[edit]

Symbol version future.svg 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.
  • Over 15% in performance - it's currently unknown if this is done through up-binning or through IPC improvement or a combination of both.
  • Chipset
    • 200 Series chipset → 300 Series chipset (Cannonlake PCH)
      • Integrated Programmable (Open FW SDK) Quad-Core Audio DSP
      • Soundwire Digital Audio Interface
      • Integrated USB 3.1 (10 Gib/s)
        • Up to 6 ports
      • Integrated Intel wireless controller (IEEE 802.11ac)
      • Integrated SDXC 3.0 controller
      • Thunderbolt 3.0(Titan Ridge) with DisplayPort 1.4 support
      • C10 & S0ix Support for Modern Standby
  • Memory
    • Faster memory for mainstream desktops (i.e., Coffee Lake S) DDR4-2666 (from DDR4-2400)

Memory Hierarchy[edit]

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; fully 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

All Coffee Lake Chips[edit]

 Coffee Lake Chips
 Main processorIGPMajor Feature Diff
ModelLaunchedPriceFamilyPlatformCoreCTL3$L4$TDPFreqTurboMax MemNameFreqTurboTBTHTAVX2TXTTSXvProVT-d
 Uniprocessors
i3-8100$ 119.00
€ 107.10
£ 96.39
¥ 12,296.27
Core i3Coffee LakeCoffee Lake S446 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
65 W
65,000 mW
0.0872 hp
0.065 kW
3.6 GHz
3,600 MHz
3,600,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
i3-8350K$ 182.00
€ 163.80
£ 147.42
¥ 18,806.06
Core i3Coffee LakeCoffee Lake S446 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
91 W
91,000 mW
0.122 hp
0.091 kW
4 GHz
4,000 MHz
4,000,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
i5-8250U$ 297.00
€ 267.30
£ 240.57
¥ 30,689.01
Core i5Coffee LakeCoffee Lake U486 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
15 W
15,000 mW
0.0201 hp
0.015 kW
1.6 GHz
1,600 MHz
1,600,000 kHz
3.4 GHz
3,400 MHz
3,400,000 kHz
32 GiB
32,768 MiB
33,554,432 KiB
34,359,738,368 B
0.0313 TiB
i5-8350U$ 297.00
€ 267.30
£ 240.57
¥ 30,689.01
Core i5Coffee LakeCoffee Lake U486 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
15 W
15,000 mW
0.0201 hp
0.015 kW
32 GiB
32,768 MiB
33,554,432 KiB
34,359,738,368 B
0.0313 TiB
i5-8400$ 185.00
€ 166.50
£ 149.85
¥ 19,116.05
Core i5Coffee Lake S669 MiB
9,216 KiB
9,437,184 B
0.00879 GiB
65 W
65,000 mW
0.0872 hp
0.065 kW
2.8 GHz
2,800 MHz
2,800,000 kHz
3.9 GHz
3,900 MHz
3,900,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
i5-8600K$ 264.00
€ 237.60
£ 213.84
¥ 27,279.12
Core i5Coffee Lake S669 MiB
9,216 KiB
9,437,184 B
0.00879 GiB
95 W
95,000 mW
0.127 hp
0.095 kW
3.6 GHz
3,600 MHz
3,600,000 kHz
4.3 GHz
4,300 MHz
4,300,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
i7-8550U$ 409.00
€ 368.10
£ 331.29
¥ 42,261.97
Core i7Coffee LakeCoffee Lake U488 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
15 W
15,000 mW
0.0201 hp
0.015 kW
1.8 GHz
1,800 MHz
1,800,000 kHz
4 GHz
4,000 MHz
4,000,000 kHz
32 GiB
32,768 MiB
33,554,432 KiB
34,359,738,368 B
0.0313 TiB
i7-8600UCore i7Coffee LakeCoffee Lake U488 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
15 W
15,000 mW
0.0201 hp
0.015 kW
32 GiB
32,768 MiB
33,554,432 KiB
34,359,738,368 B
0.0313 TiB
i7-8650U$ 409.00
€ 368.10
£ 331.29
¥ 42,261.97
Core i7Coffee LakeCoffee Lake U488 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
15 W
15,000 mW
0.0201 hp
0.015 kW
1.9 GHz
1,900 MHz
1,900,000 kHz
32 GiB
32,768 MiB
33,554,432 KiB
34,359,738,368 B
0.0313 TiB
i7-8700$ 318.00
€ 286.20
£ 257.58
¥ 32,858.94
Core i7Coffee Lake S61212 MiB
12,288 KiB
12,582,912 B
0.0117 GiB
65 W
65,000 mW
0.0872 hp
0.065 kW
3.2 GHz
3,200 MHz
3,200,000 kHz
4.6 GHz
4,600 MHz
4,600,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
i7-8700K$ 378.00
€ 340.20
£ 306.18
¥ 39,058.74
Core i7Coffee Lake S61212 MiB
12,288 KiB
12,582,912 B
0.0117 GiB
95 W
95,000 mW
0.127 hp
0.095 kW
3.7 GHz
3,700 MHz
3,700,000 kHz
4.7 GHz
4,700 MHz
4,700,000 kHz
64 GiB
65,536 MiB
67,108,864 KiB
68,719,476,736 B
0.0625 TiB
Count: 11

References[edit]

  • Mark Bohr, Intel. Intel Technology and Manufacturing Day. Mar 28, 2017.
codenameCoffee Lake +
core count6 + and 4 +
designerIntel +
first launchedAugust 21, 2017 +
full page nameintel/microarchitectures/coffee lake +
instance ofmicroarchitecture +
instruction set architecturex86-16 +, x86-32 + and x86-64 +
manufacturerIntel +
microarchitecture typeCPU +
nameCoffee Lake +
pipeline stages (max)19 +
pipeline stages (min)14 +
process14 nm (0.014 μm, 1.4e-5 mm) +