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Skylake X
General Info
Designer	Intel
Manufacturer	Intel
Introduction	May 30, 2017 (announced) June 26, 2017 (launched)
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Skylake (server)
Platform	Basin Falls
Word Size	8 octets 16 nibbles 64 bit
Process	14 nm 0.014 μm 1.4e-5 mm
Technology	CMOS
Clock	2,600 MHz - 3,500 MHz
Packaging
Package	FCLGA-2066 (LGA)
Dimension	52.5 mm × 45 mm
Pitch	1.016 mm
Contacts	2066
Socket	Socket R4
Succession
Broadwell E Skylake X Refresh
Contemporary
Kaby Lake X

Skylake X (SKL-X) is the processor core for Intel's high-end desktop (HEDT) microprocessor line based on the Skylake microarchitecture serving as a successor to Broadwell E. Skylake X processors feature a large array of enhancements and improvements including the new AVX-512 extension. Unlike the mainstream Skylake processors, enthusiasts Skylake X models are fabricated on Intel's enhanced 14+ nm process.

Overview

Skylake X based processors are a 2-chip solution - the microprocessor and the chipset. Skylake X are Socket R4 and use the Lewisburg chipset (HUB).

Common Features

All Skylake X processors have the following:

• Quad-channel Memory
  • Up to DDR4-2400 / DDR4-2666
  • Up to 128 GiB
• 28x or 44x PCIe
• 6 cores to 18 cores with all models supporting Hyper-Threading)
• Everything up to AVX-512 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, AVX2, and AVX-512)

Skylake X Processors

	List of Skylake X Processors
	Main processor									Cache		Memory	I/O	Feature Diff
Model	Price	Family	Process	Launched	Cores	Threads	Frequency	Turbo	TDP	L2	L3	Memory Type	Max PCIe	Turbo Max
i7-7800X	$ 389.00 € 350.10 £ 315.09 ¥ 40,195.37	Core i7	14 nm 0.014 μm 1.4e-5 mm	26 June 2017	6	12	3.5 GHz 3,500 MHz 3,500,000 kHz	4 GHz 4,000 MHz 4,000,000 kHz	140 W 140,000 mW 0.188 hp 0.14 kW	6 MiB 6,144 KiB 6,291,456 B 0.00586 GiB	8.25 MiB 8,448 KiB 8,650,752 B 0.00806 GiB	DDR4-2400		✘
i7-7820X	$ 599.00 € 539.10 £ 485.19 ¥ 61,894.67	Core i7	14 nm 0.014 μm 1.4e-5 mm	26 June 2017	8	16	3.6 GHz 3,600 MHz 3,600,000 kHz	4.3 GHz 4,300 MHz 4,300,000 kHz	140 W 140,000 mW 0.188 hp 0.14 kW	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	11 MiB 11,264 KiB 11,534,336 B 0.0107 GiB	DDR4-2666		✔
i9-7900X	$ 999.00 € 899.10 £ 809.19 ¥ 103,226.67	Core i9	14 nm 0.014 μm 1.4e-5 mm	26 June 2017	10	20	3.3 GHz 3,300 MHz 3,300,000 kHz	4.3 GHz 4,300 MHz 4,300,000 kHz	140 W 140,000 mW 0.188 hp 0.14 kW	10 MiB 10,240 KiB 10,485,760 B 0.00977 GiB	13.75 MiB 14,080 KiB 14,417,920 B 0.0134 GiB	DDR4-2666		✔
i9-7920X	$ 1,199.00 € 1,079.10 £ 971.19 ¥ 123,892.67	Core i9	14 nm 0.014 μm 1.4e-5 mm	28 August 2017	12	24	2.9 GHz 2,900 MHz 2,900,000 kHz	4.3 GHz 4,300 MHz 4,300,000 kHz	140 W 140,000 mW 0.188 hp 0.14 kW	12 MiB 12,288 KiB 12,582,912 B 0.0117 GiB	16.5 MiB 16,896 KiB 17,301,504 B 0.0161 GiB	DDR4-2666		✔
i9-7940X	$ 1,399.00 € 1,259.10 £ 1,133.19 ¥ 144,558.67	Core i9	14 nm 0.014 μm 1.4e-5 mm	25 September 2017	14	28	3.1 GHz 3,100 MHz 3,100,000 kHz	4.3 GHz 4,300 MHz 4,300,000 kHz	165 W 165,000 mW 0.221 hp 0.165 kW	14 MiB 14,336 KiB 14,680,064 B 0.0137 GiB	19.25 MiB 19,712 KiB 20,185,088 B 0.0188 GiB	DDR4-2666		✔
i9-7960X	$ 1,699.00 € 1,529.10 £ 1,376.19 ¥ 175,557.67	Core i9	14 nm 0.014 μm 1.4e-5 mm	25 September 2017	16	32	2.8 GHz 2,800 MHz 2,800,000 kHz	4.2 GHz 4,200 MHz 4,200,000 kHz	165 W 165,000 mW 0.221 hp 0.165 kW	16 MiB 16,384 KiB 16,777,216 B 0.0156 GiB	22 MiB 22,528 KiB 23,068,672 B 0.0215 GiB	DDR4-2666		✔
i9-7980XE	$ 1,999.00 € 1,799.10 £ 1,619.19 ¥ 206,556.67	Core i9	14 nm 0.014 μm 1.4e-5 mm	25 September 2017	18	36	2.6 GHz 2,600 MHz 2,600,000 kHz	4.2 GHz 4,200 MHz 4,200,000 kHz	165 W 165,000 mW 0.221 hp 0.165 kW	18 MiB 18,432 KiB 18,874,368 B 0.0176 GiB	24.75 MiB 25,344 KiB 25,952,256 B 0.0242 GiB	DDR4-2666		✔
Count: 7

See also

Skylake (server) Skylake SP Skylake X Skylake W Skylake DE	Power/Performance
Skylake (client) Skylake DT Skylake S Skylake H Skylake U Skylake Y	Power/Performance

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