Difference between revisions of "intel/core i9/i9-7940x"

	Edit Values
	Core i9-7940X
	General Info
Designer	Intel
Manufacturer	Intel
Model Number	i9-7940X
Part Number	CD8067303734701
S-Spec	SR3RQ
Market	Desktop
Introduction	May 30, 2017 (announced); September 25, 2017 (launched)
Release Price	$1,399
Shop	Amazon
	General Specs
Family	Core i9
Series	i9-7900
Locked	No
Frequency	3,100 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	14
Threads	28
Max Memory	128 GiB
	Multiprocessing
Max SMP	1-Way (Uniprocessor)
	Electrical
TDP	165 W
Tjunction	0 °C – 102 °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

Latest revision as of 13:34, 10 June 2020

Core i9-7940X is a 64-bit tetradeca-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 i9-7940X operates at 3.1 GHz with a TDP of 165 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 i9-7940X has a Turbo Max frequency of 4.4 GHz.

Cache[edit]

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$

896 KiB

917,504 B
0.875 MiB

L1I$	448 KiB 458,752 B 0.438 MiB	14x32 KiB	8-way set associative
L1D$	448 KiB 458,752 B 0.438 MiB	14x32 KiB	8-way set associative	write-back

L2$

14 MiB

14,336 KiB
14,680,064 B
0.0137 GiB

		14x1 MiB	16-way set associative	write-back

L3$

19.25 MiB

19,712 KiB
20,185,088 B
0.0188 GiB

		14x1.375 MiB	11-way set associative	write-back

Memory controller[edit]

[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]

[Edit/Modify Expansions Info]

Expansion Options

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

Graphics[edit]

This processor has no integrated graphics.

Features[edit]

[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[edit]

See also: Intel's CPU Frequency Behavior

[Modify Frequency Info]

Mode	Base	Turbo Frequency/Active Cores
Mode	Base	1	2	3	4	5	6	7	8	9	10	11	12	13	14
Normal	3,100 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	4,000 MHz	4,000 MHz	4,000 MHz	4,000 MHz	3,800 MHz	3,800 MHz

@@ Line 1: / Line 1: @@
 {{intel title|Core i9-7940X}}
-{{mpu
+{{chip
-|future=Yes
 |name=Core i9-7940X
 |image=skylake x (front).png
@@ Line 7: / Line 6: @@
 |manufacturer=Intel
 |model number=i9-7940X
+|part number=CD8067303734701
+|s-spec=SR3RQ
 |market=Desktop
 |first announced=May 30, 2017
@@ Line 27: / Line 28: @@
 |core name=Skylake X
 |core family=6
+|core model=85
+|core stepping=M0
 |process=14 nm
 |technology=CMOS
@@ Line 35: / Line 38: @@
 |max memory=128 GiB
 |tdp=165 W
+|tjunc min=0 °C
+|tjunc max=102 °C
 |tstorage min=-25 °C
 |tstorage max=125 °C
-|package module 1={{packages/intel/lga-2066}}
+|package name 1=intel,fclga_2066
 }}
-'''Core i9-7940X''' is a {{arch|64}} [[tetradeca-core]] high-performance [[x86]] desktop microprocessor introduced by [[Intel]] in mid-[[2017]].  This chip, which is based on the {{intel|Skylake|l=arch}} microarchitecture, is fabricated on Intel's enhanced [[14 nm process|14nm+ process]]. The i7-7940X operates at 3.1 GHz with a TDP of 165 W and a {{intel|Turbo Boost}} frequency of 4.3 GHz. The processor supports up to 128 GiB of quad-channel DDR4-2666 memory.
+'''Core i9-7940X''' is a {{arch|64}} [[tetradeca-core]] high-performance [[x86]] desktop microprocessor introduced by [[Intel]] in mid-[[2017]].  This chip, which is based on the {{intel|Skylake|l=arch}} microarchitecture, is fabricated on Intel's enhanced [[14 nm process|14nm+ process]]. The i9-7940X operates at 3.1 GHz with a TDP of 165 W and a {{intel|Turbo Boost}} frequency of 4.3 GHz. The processor supports up to 128 GiB of quad-channel DDR4-2666 memory.
-In addition to its {{intel|Turbo Boost}} frequency, the i9-7940X has a {{intel|Turbo Max}} frequency of 4.4 GHz.
+In addition to its {{intel|Turbo Boost}} frequency, the i9-7940X has a {{intel|Turbo Max}} frequency of {{set tbmt|4.4 GHz}}.
 == Cache ==
@@ Line 77: / Line 82: @@
 == Expansions ==
-{{expansions
+{{expansions main
-| pcie revision      = 3.0
+|
-| pcie lanes         = 44
+{{expansions entry
-| pcie config        = 2x16+1x8+1x4
+|type=PCIe
+|pcie revision=3.0
+|pcie lanes=44
+|pcie config=x16
+|pcie config 2=x8
+|pcie config 3=x4
+}}
 }}
@@ Line 119: / Line 130: @@
 |avx5124vnniw=No
 |avx512vpopcntdq=No
+|avx512units=2
 |abm=Yes
 |tbm=No
@@ Line 160: / Line 172: @@
 |vtd=Yes
 |ept=Yes
-|mpx=Yes
+|mpx=No
-|sgx=Yes
+|sgx=No
 |securekey=No
 |osguard=No
+|intqat=No
 |3dnow=No
 |e3dnow=No
@@ Line 177: / Line 190: @@
 |sensemi=No
 |xfr=No
+|xfr2=No
+|mxfr=No
+|amdpb=No
+|amdpb2=No
+|amdpbod=No
 }}
@@ Line 182: / Line 200: @@
 {{see also|intel/frequency_behavior|l1=Intel's CPU Frequency Behavior}}
 {{frequency table
+|freq_base=3,100 MHz
+|freq_1=4,300 MHz
+|freq_2=4,300 MHz
+|freq_3=4,100 MHz
+|freq_4=4,100 MHz
+|freq_5=4,000 MHz
+|freq_6=4,000 MHz
+|freq_7=4,000 MHz
+|freq_8=4,000 MHz
+|freq_9=4,000 MHz
+|freq_10=4,000 MHz
+|freq_11=4,000 MHz
+|freq_12=4,000 MHz
+|freq_13=3,800 MHz
+|freq_14=3,800 MHz
 }}

Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	Core i9-7940X - Intel#io +
has advanced vector extensions	true +
has advanced vector extensions 2	true +
has advanced vector extensions 512	true +
has ecc memory support	false +
has extended page tables support	true +
has feature	Advanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Vector Extensions 512 +, Advanced Encryption Standard Instruction Set Extension +, Hyper-Threading Technology +, Turbo Boost Technology 2.0 +, Turbo Boost Max Technology 3.0 +, Enhanced SpeedStep Technology +, Intel VT-x +, Intel VT-d +, Extended Page Tables +, Transactional Synchronization Extensions +, Memory Protection Extensions + and Software Guard Extensions +
has intel enhanced speedstep technology	true +
has intel turbo boost max technology 3 0	true +
has intel turbo boost technology 2 0	true +
has intel vt-d technology	true +
has intel vt-x technology	true +
has second level address translation support	true +
has simultaneous multithreading	true +
has transactional synchronization extensions	true +
has x86 advanced encryption standard instruction set extension	true +
l1$ size	896 KiB (917,504 B, 0.875 MiB) +
l1d$ description	8-way set associative +
l1d$ size	448 KiB (458,752 B, 0.438 MiB) +
l1i$ description	8-way set associative +
l1i$ size	448 KiB (458,752 B, 0.438 MiB) +
l2$ description	16-way set associative +
l2$ size	14 MiB (14,336 KiB, 14,680,064 B, 0.0137 GiB) +
l3$ description	11-way set associative +
l3$ size	19.25 MiB (19,712 KiB, 20,185,088 B, 0.0188 GiB) +
max memory 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) +
max memory channels	4 +
max pcie lanes	44 +
supported memory type	DDR4-2666 +
x86/has memory protection extensions	true +
x86/has software guard extensions	true +

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