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Xeon Phi - Intel
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Xeon Phi
xeon phi (2015).png
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[edit]

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Member[edit]

Knights Ferry[edit]

Main article: Knights Ferry
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Knights Corner[edit]

Main article: Knights Corner
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Knights Landing[edit]

Main article: Knights Landing
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Knights Mill[edit]

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
ModelLaunchedPriceFamilyCoresThreadsL2$TDPBaseTurboo
723518 December 2017Xeon Phi6425632 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
728518 December 2017Xeon Phi6827234 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
729518 December 2017Xeon Phi7228836 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[edit]

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.

Facts about "Xeon Phi - Intel"
designerIntel +
first announced2012 +
first launched2012 +
full page nameintel/xeon phi +
instance ofmicroprocessor family +
instruction set architecturex86-64 +
main designerIntel +
manufacturerIntel +
microarchitectureKnights Ferry +, Knights Corner +, Knights Landing + and Knights Mill +
nameXeon Phi +
process22 nm (0.022 μm, 2.2e-5 mm) + and 14 nm (0.014 μm, 1.4e-5 mm) +
technologyCMOS +
word size64 bit (8 octets, 16 nibbles) +