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Core i9-7920X
General Info
Designer	Intel
Manufacturer	Intel
Model Number	i9-7920X
Part Number	BX80673I97920X, BXC80673I97920X, CD8067303753300
S-Spec	SR3NG
Market	Desktop
Introduction	May 30, 2017 (announced) August 28, 2017 (launched)
Release Price	$1,199
Shop	Amazon
General Specs
Family	Core i9
Series	i9-7900
Locked	No
Frequency	2,900 MHz
Turbo Frequency	4,300 MHz (1 core), 4,300 MHz (2 cores)
Bus type	DMI 3.0
Bus rate	4 × 8 GT/s
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Skylake (server)
Platform	Skylake
Chipset	Lewisburg
Core Name	Skylake X
Core Family	6
Core Model	85
Core Stepping	M0
Process	14 nm
Technology	CMOS
Word Size	64 bit
Cores	12
Threads	24
Max Memory	128 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	140 W
Tjunction	0 °C – 95 °C
Tstorage	-25 °C – 125 °C
Packaging
Package	FCLGA-2066 (LGA)
Dimension	52.5 mm × 45 mm
Pitch	1.016 mm
Contacts	2066
Socket	Socket R4

Core i9-7920X is a 64-bit dodeca-core high-performance x86 desktop microprocessor introduced by Intel in mid-2017. This chip, which is based on the Skylake microarchitecture, is fabricated on Intel's enhanced 14nm+ process. The i7-7920X operates at 2.9 GHz with a TDP of 140 W and a Turbo Boost frequency of 4.3 GHz. The processor supports up to 128 GiB of quad-channel DDR4-2666 memory.

In addition to its Turbo Boost frequency, the i9-7920X has a Turbo Max frequency of 4.4 GHz.

Cache

Main article: Skylake § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 768 KiB 786,432 B 0.75 MiB L1I$ 384 KiB 393,216 B 0.375 MiB 12x32 KiB 8-way set associative   L1D$ 384 KiB 393,216 B 0.375 MiB 12x32 KiB 8-way set associative write-back L2$ 12 MiB 12,288 KiB 12,582,912 B 0.0117 GiB     12x1 MiB 16-way set associative write-back L3$ 16.5 MiB 16,896 KiB 17,301,504 B 0.0161 GiB     12x1.375 MiB 11-way set associative write-back

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2666 Supports ECC No Channels 4 Max Bandwidth 79.47 GiB/s 81,377.28 MiB/s 85.33 GB/s 85,330.263 MB/s 0.0776 TiB/s 0.0853 TB/s Bandwidth Single 19.89 GiB/s Double 39.72 GiB/s Quad 79.47 GiB/s

Expansions

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 3.0 Max Lanes: 44 Configuration: x16, x8, x4

Graphics

This processor has no integrated graphics.

Features

[Edit/Modify Supported Features]

Supported x86 Extensions & Processor Features

MMX MMX Extension EMMX Extended MMX Extension SSE Streaming SIMD Extensions SSE2 Streaming SIMD Extensions 2 SSE3 Streaming SIMD Extensions 3 SSSE3 Supplemental SSE3 SSE4.1 Streaming SIMD Extensions 4.1 SSE4.2 Streaming SIMD Extensions 4.2 AVX Advanced Vector Extensions AVX2 Advanced Vector Extensions 2 AVX-512 Advanced Vector 512-bit (2 Units) AVX512F AVX-512 Foundation AVX512CD AVX-512 Conflict Detection AVX512BW AVX-512 Byte and Word AVX512DQ AVX-512 Doubleword and Quadword Instructions AVX512VL AVX-512 Vector Length ABM Advanced Bit Manipulation BMI1 Bit Manipulation Instruction Set 1 BMI2 Bit Manipulation Instruction Set 2 FMA3 3-Operand Fused-Multiply-Add AES AES Encryption Instructions RdRand Hardware RNG ADX Multi-Precision Add-Carry CLMUL Carry-less Multiplication Extension F16C 16-bit Floating Point Conversion x86-16 16-bit x86 x86-32 32-bit x86 x86-64 64-bit x86 Real Real Mode Protected Protected Mode SMM System Management Mode FPU Integrated x87 FPU NX No-eXecute HT Hyper-Threading TBT 2.0 Turbo Boost Technology 2.0 TBMT 3.0 Turbo Boost Max Technology 3.0 EIST Enhanced SpeedStep Technology VT-x VT-x (Virtualization) VT-d VT-d (I/O MMU virtualization) EPT Extended Page Tables (SLAT) TSX Transactional Synchronization Extensions

Frequencies

See also: Intel's CPU Frequency Behavior

[Modify Frequency Info]

Mode	Base	Turbo Frequency/Active Cores
		1	2	3	4	5	6	7	8	9	10	11	12
Normal	2,900 MHz	4,300 MHz	4,300 MHz	4,100 MHz	4,100 MHz	4,000 MHz	4,000 MHz	4,000 MHz	4,000 MHz	3,800 MHz	3,800 MHz	3,800 MHz	3,800 MHz