Core X
Developer	Intel
Manufacturer	Intel
Type	Microprocessors
Introduction	May 30, 2017 (announced)
Architecture	High-performance, high core count x86 desktop processors
µarch	Skylake, Kaby Lake
Word size	64 bit 8 octets 16 nibbles
Process	14 nm 0.014 μm 1.4e-5 mm
Technology	CMOS
Clock	3,300 MHz-4,300 MHz
Package	FCLGA-2066
Socket	Socket R
Succession
←
Core i7 Extreme Edition

Core X is a family of high-performance and high core count 64-bit x86 microprocessors introduced by Intel in mid-2017.

Overview

The Core X family was announced during Computex 2017. Core X is effectively a successor to the Core i7 Extreme Edition family which used to feature Intel's flagship model from each architecture. The Core X family has expanded into a series of models ranging from 6 to 18 cores.

Members

Skylake

See also: Skylake µarch and Skylake X core

Skylake-based Core X processors were introduced at Computex 2017. Those processors incorporate a large number of changes over their Broadwell counterparts which brings along a performance increase in addition to other improvements. Those processors are also the first to incorporate the new AVX-512 extension.

• TDP: 140 W
• ISA: Everything up to AVX-512 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, FMA3, AVX2, and AVX-512)
• Tech: Turbo Boost 2.0, Turbo Max 3.0, Hyper-Threading, VT-x, VT-d, SpeedStep, Software Guard (SGX), and Memory Protection (MPX)

	List of Skylake-based Core X Processors
	Main processor										Memory		I/O	Features
Model	Price	Process	Launched	Cores	Threads	L2$	L3$	Frequency	Turbo	TDP	Max Mem	Memory Type	Max PCIe	Turbo Max
Count: 0

Kaby Lake

See also: Kaby Lake µarch and Kaby Lake X core

Kaby Lake-based Core X processors were introduced at Computex 2017 at the same time as the Skylake models. Despite that, those processors are far more similar to the high-end Core i7 (Kaby Lake S core) contemporaries in terms of features and capabilities vs the Skylake Core X variants. Likewise, they do not incorporate some of the more significant features such as a high core count, the cache hierarchy, and AVX-512. Additionally, those processors only support dual-channel memory.

• TDP: 112 W
• ISA: Everything up to AVX2 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, FMA3, AVX2)
• Tech: Turbo Boost 2.0, Turbo Max 3.0, VT-x, VT-d, SpeedStep, Software Guard (SGX), and Memory Protection (MPX)
• 16x PCIe lanes
• Up to 64 GiB of dual-channel DDR-2666 memory

	List of Kaby Lake-based Core X Processors
	Main processor										Features
Model	Price	Process	Launched	Cores	Threads	L2$	L3$	Frequency	Turbo	TDP	HT
i5-7640X	$ 242.00 € 217.80 £ 196.02 ¥ 25,005.86	14 nm 0.014 μm 1.4e-5 mm	26 June 2017	4	4	1 MiB 1,024 KiB 1,048,576 B 9.765625e-4 GiB	6 MiB 6,144 KiB 6,291,456 B 0.00586 GiB	4 GHz 4,000 MHz 4,000,000 kHz	4.2 GHz 4,200 MHz 4,200,000 kHz	112 W 112,000 mW 0.15 hp 0.112 kW	✘
i7-7740X	$ 339.00 € 305.10 £ 274.59 ¥ 35,028.87	14 nm 0.014 μm 1.4e-5 mm	26 June 2017	4	8	1 MiB 1,024 KiB 1,048,576 B 9.765625e-4 GiB	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	4.3 GHz 4,300 MHz 4,300,000 kHz	4.5 GHz 4,500 MHz 4,500,000 kHz	112 W 112,000 mW 0.15 hp 0.112 kW	✔
Count: 2

See also

• AMD Ryzen 7
• Intel Core i7EE