Xeon Phi
Xeon Phi Logo since 2015
Developer	Intel
Manufacturer	Intel
Type	Microprocessors
Introduction	2012 (announced) 2012 (launch)
Architecture	Many-core x86 microprocessors
ISA	x86-64
µarch	Knights Ferry, Knights Corner, Knights Landing, Knights Mill
Word size	64 bit 8 octets 16 nibbles
Process	22 nm 0.022 μm 2.2e-5 mm , 14 nm 0.014 μm 1.4e-5 mm
Technology	CMOS

Xeon Phi is a family of x86 many-core microprocessors designed by Intel since 2012 for supercomputers and workstations primarily aimed at scientists and researchers. Those processors are based on Intel's MIC Architecture. Xeon Phi differs from other GPGPU and many-core processors in its unique quality that it retains almost full compatibility with existing x86 software and libraries allowing those processors to tap into the extensive x86 ecosystem.

Overview

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Member

Knights Ferry

Main article: Knights Ferry

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Knights Corner

Main article: Knights Corner

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Knights Landing

Main article: Knights Landing

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Knights Mill

Main article: Knights Mill

Launched in December 2017, Knights Mill processors are a special variant of Knights Landing specifically designed to accelerate deep learning type of workloads.

	List of Knights Mill-based Xeon Phi Processors
	Main processor
Model	Launched	Price	Family	Cores	Threads	L2$	TDP	Base	Turboo
7235	18 December 2017		Xeon Phi	64	256	32 MiB 32,768 KiB 33,554,432 B 0.0313 GiB	250 W 250,000 mW 0.335 hp 0.25 kW	1.3 GHz 1,300 MHz 1,300,000 kHz	1.4 GHz 1,400 MHz 1,400,000 kHz
7285	18 December 2017		Xeon Phi	68	272	34 MiB 34,816 KiB 35,651,584 B 0.0332 GiB	250 W 250,000 mW 0.335 hp 0.25 kW	1.3 GHz 1,300 MHz 1,300,000 kHz	1.4 GHz 1,400 MHz 1,400,000 kHz
7295	18 December 2017		Xeon Phi	72	288	36 MiB 36,864 KiB 37,748,736 B 0.0352 GiB	320 W 320,000 mW 0.429 hp 0.32 kW	1.5 GHz 1,500 MHz 1,500,000 kHz	1.6 GHz 1,600 MHz 1,600,000 kHz
Count: 3

Knights Hill & Knights Peak

Main articles: Knights Hill and Knights Peak

Announces on November 18 2014, Knights Hill was planned to be fabricated on their 10 nm process. Severe delays with their 10 nm process has caused them to push the architecture all the way back to 2018. In late 2017 Intel finally announce that they had cancelled the architecture altogether in favor of an entirely new microarchitecture aimed at exascale computing. Consequently, Knights Peak, Hill's successor was also cancelled.