Coffee Lake

Coffee Lake is Intel's codename for its eighth-generation Core microprocessor family, announced on September 25, 2017.^[5] It is manufactured using Intel's second 14 nm process node refinement.^[6] Desktop Coffee Lake processors introduced i5 and i7 CPUs featuring six cores (along with hyper-threading in the case of the latter) and Core i3 CPUs with four cores and no hyperthreading.

Coffee Lake

Intel Core i7-8700K with six physical cores
General information
Launched	October 5, 2017; 7 years ago (October 5, 2017)[1]
Discontinued	June 4, 2021 (8th gen, except for Xeons)[2][3] December 24, 2021 (9th gen)[4]
Marketed by	Intel
Designed by	Intel
Common manufacturer	Intel
CPUID code	0906eah, 0906ebh, 0906ech, 0906edh
Product code	80684
Cache
L1 cache	64 KB[a] per core
L2 cache	256 KB per core
L3 cache	Up to 16 MB, shared
L4 cache	128 MB of eDRAM (on some models)
Architecture and classification
Application	Desktop
Technology node	Intel 14 nm++
Microarchitecture	Coffee Lake
Instruction set	x86-64
Instructions	x86-64
Extensions	MMX, AES-NI, CLMUL, FMA3, RDRAND SSE, SSE2, SSE3, SSSE3, SSE4, SSE4.1, SSE4.2 AVX, AVX2, TXT, TSX, SGX VT-x, VT-d
Physical specifications
Cores	2–8
GPU	GT2, GT3e
Socket	LGA 1151 with altered pinout to support more than four cores
Products, models, variants
Product code name	CFL
Brand name	Celeron Pentium Gold Core i3 Core i5 Core i7 Core i9 Xeon E
History
Predecessor	Kaby Lake (optimization)
Successors	Same generation Cannon Lake (10nm, mobile) Whiskey Lake (14nm, mobile) Next generation Ice Lake (10nm, mobile) Comet Lake (14nm, desktop)
Support status
Legacy support for iGPU

On October 8, 2018, Intel announced what it branded its ninth generation of Core processors, the Coffee Lake Refresh family.^[7] To avoid running into thermal problems at high clock speeds, Intel soldered the integrated heat spreader (IHS) to the CPU die instead of using thermal paste as on the Coffee Lake processors.^[8] The generation was defined by another increase of core counts.

Coffee Lake is used with the 300-series chipset, and officially does not work with the 100- and 200-series chipset motherboards. Although desktop Coffee Lake processors use the same physical LGA 1151 socket as Skylake and Kaby Lake, the pinout is electrically incompatible with these older processors and motherboards.^[9]

On April 2, 2018, Intel released additional desktop Core i3, i5, i7, Pentium Gold, Celeron CPUs, the first six-core Core i7 and i9 mobile CPUs, hyper-threaded four-core Core i5 mobile CPUs, and the first Coffee Lake ultra-power CPUs with Intel Iris Plus graphics.

On June 8, 2018, to commemorate the 40th anniversary of the Intel 8086 CPU architecture, Intel released the i7-8086K as a limited edition CPU, a renumbered and slightly higher clocked batch of the i7-8700K dies.

History

Coffee Lake's development was led by Intel Israel's processor design team in Haifa, Israel, as an optimization of Kaby Lake.^[10] Intel first launched its 8th Generation Intel Core family processors in August 2017. While with the release of the new 8th Gen Intel Core i9 processor in 2018, Intel said it would be the highest-performance laptop processor Intel has ever built.^[10]

Features

Coffee Lake processor die from an i7-8700K with 6 cores

Coffee Lake CPUs are built using the second refinement of Intel's 14 nm process (14 nm++).^[6] It features increased transistor gate pitch for a lower current density and higher leakage transistors that allows higher peak power and higher frequency at the expense of die area and idle power.

Coffee Lake marks a shift in the number of cores for Intel's mainstream desktop processors, the first such update for the previous ten-year history of Intel Core CPUs. In the 8th generation, mainstream desktop i7 CPUs feature six hyperthreaded cores, i5 CPUs feature six single-threaded cores and i3 CPUs feature four single-threaded cores.

9th generation

For the 9th generation, the Intel Core i9 branding made its debut on the mainstream desktop, describing CPUs with 8 cores and 16 threads. 9th generation i7s feature 8 single-threaded cores, marking the first time desktop Core i7s have not featured Intel's Hyper-threading technology, although the 9th generation Core i7 mobile CPUs do support hyperthreading and have 6 cores just like 8th gen mobile chips. 9th generation i5 CPUs feature six single-threaded cores, just like their 8th generation predecessors.

The ninth generation Core i series includes hardware fixes for Meltdown and L1 Terminal Fault.^[11]

Chipsets

The 300 series chipsets, while using physically identical LGA 1151 socket to the 100 and 200 series chipsets, are officially only compatible with Coffee Lake CPUs, meaning that older motherboards do not officially support Coffee Lake processors,^[12][9] and 300 series motherboards do not officially support Skylake or Kaby Lake processors.

The enthusiast Z370 (a rebranded Z270), launched alongside the first Coffee Lake CPUs in October 2017, was the only officially supported chipset for these mainstream CPUs. When the full lineup of CPUs was revealed in April 2018, it was then accompanied by the lower-end H310, B360, H370 and Q370 chipsets for home and business users. The Z390 chipset was launched alongside the release of the 9th generation CPUs, supporting all 8th and 9th generation mainstream desktop parts. A B365 chipset was added later on.

9th generation Xeons require motherboards with the C246 chipset.^[13]

Architecture changes compared with Kaby Lake

Coffee Lake features largely the same CPU core and performance per MHz as Skylake/Kaby Lake.^[14][15] Features specific to Coffee Lake include:

• Increased core count: Core i3 increased from 2 to 4 cores, Core i5 and 8th Generation i7 parts increased from 4 to 6 cores, 9th generation i7 and i9 parts feature eight cores.
• Increased L3 cache in accordance to the number of threads
• Increased turbo clock speeds across i5 and i7 CPUs models (increased by up to 400 MHz)
• Increased iGPU clock speeds by 50 MHz and rebranded it UHD (Ultra High Definition)
• DDR4 memory support updated for 2666 MT/s (for i5, i7 and i9 parts) and 2400 MT/s (for i3 parts); DDR3 memory is no longer supported on LGA1151 parts, unless using with H310C chipset
• 300 series chipset on the second revision of socket LGA 1151
• Support for CNVi

Kaby Lake Refresh vs. Coffee Lake

Main article: Kaby Lake § List of Kaby Lake R processors

On August 8, 2017, Intel announced the first of its new eighth generation of processors would be mobile processors.^[16] As Intel's previous changes in product generations coincided with new microarchitectures, it was unclear^[17] but generally expected that the eighth Core generation products would be based on the new Coffee Lake microarchitecture.^[18] When it was officially announced on August 21, 2017, however, Intel stated that the eighth generation family would be based on multiple microarchitectures: Kaby Lake Refresh, Coffee Lake,^[19] Whiskey Lake, and Cannon Lake.^[20]

List of 8th generation Coffee Lake processors

Coffee Lake-S (Desktop processors)

These processors mark the first time that Intel has released mainstream consumer CPUs that support up to 128 GB RAM.^[21]

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)							GPU		L3 cache[a]	TDP	Memory support	Release date	Price (USD)[b]
			Base	Turbo clock rate[22]						Model	Max GPU clock rate (GHz)
				Number of cores used
				1	2	3	4	5	6
Core i7	8086K	6 (12)	4.0	5.0	4.6	4.5	4.4		4.3	UHD 630	1.20	12 MB	95 W	Up to 128 GB DDR4-2666	Jun 8, 2018	$425
	8700K		3.7	4.7											Oct 5, 2017	$359
	8700		3.2	4.6	4.5	4.4	4.3						65 W			$303
	8700T		2.4	4.0	4.0[23]	3.9		3.8					35 W		Apr 2, 2018
Core i5	8600K	6 (6)	3.6	4.3	4.2			4.1			1.15	9 MB	95 W		Oct 5, 2017	$257
	8600		3.1										65 W		Apr 2, 2018	$213
	8600T		2.3	3.7	3.6			3.5					35 W
	8500		3.0	4.1	4.0			3.9			1.10		65 W			$192
	8500T		2.1	3.5	3.4	3.3		3.2					35 W
	8400		2.8	4.0	3.9			3.8			1.05		65 W		Oct 5, 2017	$182
	8400T		1.7	3.3	3.2	3.1		3.0					35 W		Apr 2, 2018
Core i3	8350K	4 (4)	4.0	—							1.15	8 MB	91 W	Up to 64 GB DDR4-2400	Oct 5, 2017	$168
	8300		3.7										62 W		Apr 2, 2018	$138
	8300T		3.2										35 W
	8100		3.6								1.10	6 MB	65 W		Oct 5, 2017	$117
	8100F									—					Jan 7, 2019	?
	8100T		3.1							UHD 630	1.10		35 W		Apr 2, 2018	$117
Pentium Gold	G5600	2 (4)	3.9									4 MB	54 W			$86
	G5500		3.8													$75
	G5500T		3.2										35 W
	G5400		3.7							UHD 610	1.05		54 W			$64
	G5400T		3.1										35 W
Celeron	G4920	2 (2)	3.2									2 MB	54 W			$52
	G4900															3.1	$42
	G4900T		2.9													35 W

1. Transistorized memory, such as RAM, ROM, flash and cache sizes as well as file sizes are specified using binary meanings for K (1024¹), M (1024²), G (1024³), etc.
2. Price is Recommended Customer Price (RCP) at launch. RCP is the trade price that processors are sold by Intel to retailers and OEMs. Actual MSRP for consumers is higher

* various reviews show that the Core i7-8700K CPU may consume over 110 W under load.^[24]

Coffee Lake-E (server/workstation processors)

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)		GPU		L3 cache	TDP	Memory support	Price (USD)
			Base	Max. Turbo	Model	max GPU (GHz)
Xeon E	2186G	6 (12)	3.8	4.7	UHD P630	1.20	12 MB	95 W	DDR4-2666 Up to 128 GB ECC memory supported	$450
	2176G		3.7					80 W		$362
	2146G		3.5	4.5		1.15				$311
	2136		3.3		—					$284
	2126G	6 (6)			UHD P630	1.15				$255
	2174G	4 (8)	3.8	4.7		1.20	8 MB	71 W		$328
	2144G		3.6	4.5		1.15				$272
	2134		3.5		—					$250
	2124G	4 (4)	3.4		UHD P630	1.15				$213
	2124		3.3	4.3	—					$193
	2104G		3.2	—	UHD P630	1.10		65 W

Mobile processors (Coffee Lake H and Coffee Lake U)

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)		GPU			L3 cache	L4 cache (eDRAM)	TDP	cTDP	Price (USD)
			Base	Max. Turbo	Model	clock rate
						Base (MHz)	Max. (GHz)				Down
Xeon E	2186M	6 (12)	2.9	4.8	UHD P630	350	1.20	12 MB	—	45 W	35 W	$623
	2176M		2.7	4.4								$450
Core i9	8950HK		2.9	4.8	UHD 630						—	$583
Core i7	8850H		2.6	4.3			1.15	9 MB			35 W	$395
	8750H		2.2	4.1			1.10
	8700B		3.2	4.6			1.20	12 MB		65 W	—	$303
	8569U	4 (8)	2.8	4.7	Iris Plus 655	300		8	128 MB	28	—	$431
	8559U		2.7	4.5							20
	8557U		1.7		Iris Plus 645		1.15			15	—	OEM
Core i5	8500B	6 (6)	3.0	4.1	UHD 630	350	1.10	9 MB	—	65 W	—	$192
	8400B		2.8	4.0			1.05					$182
	8400H	4 (8)	2.5	4.2			1.10	8 MB		45 W	35 W	$250
	8300H		2.3	4.0			1.0
	8279U		2.4	4.1	Iris Plus 655	300	1.15	6 MB	128 MB	28 W	—	$320
	8269U		2.6	4.2			1.10				20
	8259U		2.3	3.8			1.05
	8260U		1.6	3.9	UHD 620		1.10		—	15 W	10 W	OEM
	8257U		1.4	3.9	Iris Plus 645		1.05		128 MB		—	OEM
Core i3	8100B	4 (4)	3.6	—	UHD 630	350	1.05		—	65 W	—	$133
	8100H		3.0				1.00			45 W	35 W	$225
	8109U	2 (4)		3.6	Iris Plus 655	300	1.05	4 MB	128 MB	28 W	20 W	$304

List of 9th generation Coffee Lake processors (Coffee Lake Refresh)

Coffee Lake Refresh die from an i9-9900K

The first 9th generation Coffee Lake CPUs were released in the fourth quarter of 2018. They include hardware mitigations against certain Meltdown/Spectre vulnerabilities.^[25][26]

The main differences from the 8th generation (besides increased frequency) are:

• Core i7 parts contain 8/8 cores/threads compared to 6/12 in 8th generation Core i7 parts.
• Core i3 parts are equipped with Turbo Boost technology.

Even though the CPUs with F suffix lack an integrated GPU, Intel set the same price for these CPUs as their featureful counterparts.^[27] Intel eventually reduced the official pricing of those CPUs in October 2019.^[28]

The Intel Core i9-9900KS CPU, released at the end of October 2019, features a limited one year warranty both for box and tray versions due to "its limited volume".^[29]

Coffee Lake-S (desktop processors)

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)									GPU		Smart cache	TDP	Memory support	Price (USD)
			Base	Turbo[30]								Model	max GPU clock rate
				Number of cores used
				1	2	3	4	5	6	7	8
Core i9	9900KS	8 (16)	4.0	5.0								UHD 630	1.20	16 MB	127 W	DDR4-2666 2-channel up to 128 GB	$513
	9900K		3.6	5.0		4.9	4.8		4.7						95 W		$488
	9900KF											—
	9900		3.1						4.7		4.6	UHD 630	1.20		65 W		$423
	9900T		2.1	4.4	4.3	4.2	4.1	4.0	3.9	3.8	3.6				35 W
Core i7	9700K	8 (8)	3.6	4.9	4.8	4.7		4.6						12 MB	95 W		$374
	9700KF											—
	9700		3.0	4.7	4.7	4.6		4.5				UHD 630	1.20		65 W		$323
	9700F											—
	9700T		2.0	4.3								UHD 630	1.20		35 W
Core i5	9600K	6 (6)	3.7	4.6	4.5	4.4		4.3		—			1.15	9 MB	95 W		$262
	9600KF											—
	9600		3.1									UHD 630	1.15		65 W		$213
	9600T		2.3	3.9											35 W
	9500		3.0	4.4	4.3	4.2		4.1					1.10		65 W		$192
	9500F											—
	9500T		2.2	3.7								UHD 630	1.10		35 W
	9400		2.9	4.1	4.0			3.9					1.05		65 W		$182
	9400F											—
	9400T		1.8	3.4								UHD 630	1.05		35 W
Core i3	9350KF	4 (4)	4.0	4.6				—				—		8 MB	91 W	DDR4-2400 2-channel up to 64 GB	$173
	9350K											UHD 630	1.15
	9320		3.7	4.4											62 W		$154
	9300			4.3													$143
	9300T		3.2	3.8									1.10		35 W
	9100		3.6	4.2	4.1	4.0								6 MB	65 W		$122
	9100F											—
	9100T		3.1	3.7								UHD 630	1.10		35 W
Pentium Gold	G5620	2 (4)	4.0	—										4 MB	54 W		$86
	G5600T		3.3										1.05		35 W		$75
	G5420		3.8									UHD 610			54 W		$64
	G5420T		3.2												35 W
Celeron	G4950	2 (2)	3.3											2 MB	54 W		$52
	G4930		3.2														$42
	G4930T		3.0										1.00		35 W

Server/workstation processors

Coffee Lake-E CPUs require C242 or C246 chipset.

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)									GPU	Smart cache	TDP	Memory support	Price (USD)
			Base	Turbo
				Number of cores used
				1	2	3	4	5	6	7	8
Xeon E	2288G	8 (16)	3.7	5.0	4.9		4.8		4.7			UHD P630	16 MB	95 W	DDR4-2666 2-channel up to 128 GB with ECC	$539
	2278G		3.4						4.7	4.6				80 W		$494
	2286G	6 (12)	4.0	4.9	4.8		4.7		4.6	—			12 MB	95 W		$450
	2276G		3.8											80 W		$362
	2246G		3.6	4.8	4.7		4.6		4.5							$311
	2236		3.4									—				$284
	2226G	6 (6)		4.7	4.6		4.5		4.4			UHD P630				$255
	2274G	4 (8)	4.0	4.9	4.8	4.6	4.4	—					8 MB	83 W		$328
	2244G		3.8	4.8	4.7	4.6	4.5							71 W		$272
	2234		3.6									—				$250
	2224G	4 (4)	3.5	4.7	4.6	4.5	4.4					UHD P630				$213
	2224		3.4	4.6	4.5	4.4	4.2					—				$193

Mobile processors (Xeon E and Coffee Lake-H Refresh)

Processor branding	Model	Cores (threads)	CPU clock rate (GHz)									GPU			L3 cache (MB)	TDP (W)	cTDP (W)	Price (US$)
			Base	Turbo								Model	Clock rate
				Number of cores used									Base (MHz)	Max. (GHz)			Down
				1	2	3	4	5	6	7	8
Xeon E	2286M	8 (16)	2.4	5.0								UHD P630	350	1.25	16	45	35	623
	2276M	6 (12)	2.8	4.7						—				1.20	12			450
Core i9	9980HK	8 (16)	2.4	5.00	4.9	4.8	4.7	4.6	4.5	4.4	4.2	UHD 630		1.25	16		—	583
	9880H		2.3	4.80										1.20			35	556
Core i7	9850H	6 (12)[31]	2.6	4.60						—				1.15	12			395
	9750H			4.50	4.40	4.3	4.2	4.1	4.0
	9750HF											—						—
Core i5	9400H	4 (8)	2.5	4.30				—				UHD 630	350	1.10	8			250
	9300HF		2.4	4.10								—
	9300H											UHD 630	350	1.05

See also

• List of Intel CPU microarchitectures

References

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12. Taylor, Paul (April 29, 2017). "Intel 300-series chipsets to provide USB 3.1 Gen2 and Gigabit Wi-Fi". KitGuru. Retrieved December 8, 2018.
13. "Product Specifications". www.intel.com.
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External links

• "Products formerly Coffee Lake". Intel. Archived from the original on October 5, 2017. Retrieved October 19, 2017.