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{{intel title|Core i9-7940X}}
 
{{intel title|Core i9-7940X}}
−
{{mpu
+
{{chip
−
| future              = Yes
+
|name=Core i9-7940X
−
| name               = Core i9-7940X
+
|image=skylake x (front).png
−
| no image            =
+
|designer=Intel
−
| image               = skylake x (front).png
+
|manufacturer=Intel
−
| image size          = 250px
+
|model number=i9-7940X
−
| caption            =
+
|part number=CD8067303734701
−
| designer           = Intel
+
|s-spec=SR3RQ
−
| manufacturer       = Intel
+
|market=Desktop
−
| model number       = i9-7940X
+
|first announced=May 30, 2017
−
| part number         =  
+
|first launched=September 25, 2017
−
| part number 1       =  
+
|release price=$1,399
−
| part number 2      =  
+
|family=Core i9
−
| part number 3       =  
+
|series=i9-7900
−
| s-spec              =  
+
|locked=No
−
| s-spec 2            =  
+
|frequency=3,100 MHz
−
| s-spec qs          =  
+
|turbo frequency1=4,300 MHz
−
| market              = Desktop
+
|turbo frequency2=4,300 MHz
−
| first announced    = May 30, 2017
+
|bus type=DMI 3.0
−
| first launched      =  
+
|bus links=4
−
| last order          =  
+
|bus rate=8 GT/s
−
| last shipment      =  
+
|isa=x86-64
−
| release price      = $1,399
+
|isa family=x86
 +
|microarch=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
 +
|core count=14
 +
|thread count=28
 +
|max cpus=1
 +
|max memory=128 GiB
 +
|tdp=165 W
 +
|tjunc min=0 °C
 +
|tjunc max=102 °C
 +
|tstorage min=-25 °C
 +
|tstorage max=125 °C
 +
|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 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.
  
−
| family              = Core i9
+
In addition to its {{intel|Turbo Boost}} frequency, the i9-7940X has a {{intel|Turbo Max}} frequency of {{set tbmt|4.4 GHz}}.
−
| series              = i9-7900
 
−
| locked              = No
 
−
| frequency           =
 
−
| turbo frequency    =
 
−
| turbo frequency1    =
 
−
| turbo frequency2    =
 
−
| turbo frequency3    =
 
−
| turbo frequency4    =
 
−
| bus type            = DMI 3.0
 
−
| bus speed          =
 
−
| bus rate            = 8 GT/s
 
−
| bus links          = 4
 
−
| clock multiplier    =
 
−
| cpuid              =
 
  
−
| isa family          = x86
+
== Cache ==
−
| isa                = x86-64
+
{{main|intel/microarchitectures/skylake_(server)#Memory_Hierarchy|l1=Skylake § Cache}}
−
| microarch          = Skylake
+
{{cache size
−
| platform            = Skylake
+
|l1 cache=896 KiB
−
| chipset            = Lewisburg
+
|l1i cache=448 KiB
−
| core name          = Skylake X
+
|l1i break=14x32 KiB
−
| core family        =  
+
|l1i desc=8-way set associative
−
| core model          =  
+
|l1d cache=448 KiB
−
| core stepping      =  
+
|l1d break=14x32 KiB
−
| process            = 14 nm
+
|l1d desc=8-way set associative
−
| transistors        =  
+
|l1d policy=write-back
−
| technology          = CMOS
+
|l2 cache=14 MiB
−
| die area            =  
+
|l2 break=14x1 MiB
−
| die width          =  
+
|l2 desc=16-way set associative
−
| die length          =  
+
|l2 policy=write-back
−
| word size          = 64 bit
+
|l3 cache=19.25 MiB
−
| core count          = 14
+
|l3 break=14x1.375 MiB
−
| thread count        = 28
+
|l3 desc=11-way set associative
−
| max cpus            = 1
+
|l3 policy=write-back
−
| max memory          = 128 GiB
+
}}
  
−
| electrical          = Yes
+
== Memory controller ==
−
| v core min          =  
+
{{memory controller
−
| v core max          =  
+
|type=DDR4-2666
−
| v io                =  
+
|ecc=No
−
| v io tolerance      =
+
|max mem=
−
| v io 2              =  
+
|channels=4
−
| sdp                =
+
|max bandwidth=79.47 GiB/s
−
| tdp                = 160 W
+
|bandwidth schan=19.89 GiB/s
−
| ctdp down          =  
+
|bandwidth dchan=39.72 GiB/s
−
| ctdp down frequency =
+
|bandwidth qchan=79.47 GiB/s
−
| ctdp up            =
+
}}
−
| ctdp up frequency  =
 
−
| tjunc min          =
 
−
| tjunc max           =  
 
−
| tcase min          =  
 
−
| tcase max           =  
 
−
| tstorage min        = -25 °C
 
−
| tstorage max        = 125 °C
 
−
| tambient min        =  
 
−
| tambient max        =
 
  
−
| package module 1    = {{packages/intel/lga-2066}}
+
== Expansions ==
 +
{{expansions main
 +
|
 +
{{expansions entry
 +
|type=PCIe
 +
|pcie revision=3.0
 +
|pcie lanes=44
 +
|pcie config=x16
 +
|pcie config 2=x8
 +
|pcie config 3=x4
 +
}}
 
}}
 
}}
−
'''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 [[14 nm process]]. The i7-7940X operates at ? GHz with a TDP of 160 W and a {{intel|Turbo Boost}} frequency of ? GHz. The processor supports up to 128 GiB of quad-channel DDR4-2666 memory.
 
  
 +
== Graphics ==
 +
This processor has no integrated graphics.
  
−
{{unknown features}}
+
== Features ==
 +
{{x86 features
 +
|real=Yes
 +
|protected=Yes
 +
|smm=Yes
 +
|fpu=Yes
 +
|x8616=Yes
 +
|x8632=Yes
 +
|x8664=Yes
 +
|nx=Yes
 +
|mmx=Yes
 +
|emmx=Yes
 +
|sse=Yes
 +
|sse2=Yes
 +
|sse3=Yes
 +
|ssse3=Yes
 +
|sse41=Yes
 +
|sse42=Yes
 +
|sse4a=No
 +
|avx=Yes
 +
|avx2=Yes
 +
|avx512f=Yes
 +
|avx512cd=Yes
 +
|avx512er=No
 +
|avx512pf=No
 +
|avx512bw=Yes
 +
|avx512dq=Yes
 +
|avx512vl=Yes
 +
|avx512ifma=No
 +
|avx512vbmi=No
 +
|avx5124fmaps=No
 +
|avx5124vnniw=No
 +
|avx512vpopcntdq=No
 +
|avx512units=2
 +
|abm=Yes
 +
|tbm=No
 +
|bmi1=Yes
 +
|bmi2=Yes
 +
|fma3=Yes
 +
|fma4=No
 +
|aes=Yes
 +
|rdrand=Yes
 +
|sha=No
 +
|xop=No
 +
|adx=Yes
 +
|clmul=Yes
 +
|f16c=Yes
 +
|tbt1=No
 +
|tbt2=Yes
 +
|tbmt3=Yes
 +
|bpt=No
 +
|eist=Yes
 +
|sst=No
 +
|flex=No
 +
|fastmem=No
 +
|ivmd=No
 +
|intelnodecontroller=No
 +
|intelnode=No
 +
|kpt=No
 +
|ptt=No
 +
|intelrunsure=No
 +
|mbe=No
 +
|isrt=No
 +
|sba=No
 +
|mwt=No
 +
|sipp=No
 +
|att=No
 +
|ipt=No
 +
|tsx=Yes
 +
|txt=No
 +
|ht=Yes
 +
|vpro=No
 +
|vtx=Yes
 +
|vtd=Yes
 +
|ept=Yes
 +
|mpx=No
 +
|sgx=No
 +
|securekey=No
 +
|osguard=No
 +
|intqat=No
 +
|3dnow=No
 +
|e3dnow=No
 +
|smartmp=No
 +
|powernow=No
 +
|amdvi=No
 +
|amdv=No
 +
|amdsme=No
 +
|amdtsme=No
 +
|amdsev=No
 +
|rvi=No
 +
|smt=No
 +
|sensemi=No
 +
|xfr=No
 +
|xfr2=No
 +
|mxfr=No
 +
|amdpb=No
 +
|amdpb2=No
 +
|amdpbod=No
 +
}}
 +
 
 +
== Frequencies ==
 +
{{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
 +
}}

Latest revision as of 13:34, 10 June 2020

Edit Values
Core i9-7940X
skylake x (front).png
General Info
DesignerIntel
ManufacturerIntel
Model Numberi9-7940X
Part NumberCD8067303734701
S-SpecSR3RQ
MarketDesktop
IntroductionMay 30, 2017 (announced)
September 25, 2017 (launched)
Release Price$1,399
ShopAmazon
General Specs
FamilyCore i9
Seriesi9-7900
LockedNo
Frequency3,100 MHz
Turbo Frequency4,300 MHz (1 core),
4,300 MHz (2 cores)
Bus typeDMI 3.0
Bus rate4 × 8 GT/s
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureSkylake (server)
PlatformSkylake
ChipsetLewisburg
Core NameSkylake X
Core Family6
Core Model85
Core SteppingM0
Process14 nm
TechnologyCMOS
Word Size64 bit
Cores14
Threads28
Max Memory128 GiB
Multiprocessing
Max SMP1-Way (Uniprocessor)
Electrical
TDP165 W
Tjunction0 °C – 102 °C
Tstorage-25 °C – 125 °C
Packaging
PackageFCLGA-2066 (LGA)
Dimension52.5 mm × 45 mm
Pitch1.016 mm
Contacts2066
SocketSocket R4

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]

hierarchy icon.svg
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 KiB8-way set associative 
L1D$448 KiB
458,752 B
0.438 MiB
14x32 KiB8-way set associativewrite-back
L2$14 MiB
14,336 KiB
14,680,064 B
0.0137 GiB
  14x1 MiB16-way set associativewrite-back
L3$19.25 MiB
19,712 KiB
20,185,088 B
0.0188 GiB
  14x1.375 MiB11-way set associativewrite-back

Memory controller[edit]

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-2666
Supports ECCNo
Channels4
Max Bandwidth79.47 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]

ide icon.svg
Expansion Options
PCIeRevision: 3.0
Max Lanes: 44
Configuration: x16, x8, x4


Graphics[edit]

This processor has no integrated graphics.

Features[edit]

[Edit/Modify Supported Features]

Cog-icon-grey.svg
Supported x86 Extensions & Processor Features
MMXMMX Extension
EMMXExtended MMX Extension
SSEStreaming SIMD Extensions
SSE2Streaming SIMD Extensions 2
SSE3Streaming SIMD Extensions 3
SSSE3Supplemental SSE3
SSE4.1Streaming SIMD Extensions 4.1
SSE4.2Streaming SIMD Extensions 4.2
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
AVX-512Advanced Vector 512-bit (2 Units)
AVX512FAVX-512 Foundation
AVX512CDAVX-512 Conflict Detection
AVX512BWAVX-512 Byte and Word
AVX512DQAVX-512 Doubleword and Quadword Instructions
AVX512VLAVX-512 Vector Length
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
ADXMulti-Precision Add-Carry
CLMULCarry-less Multiplication Extension
F16C16-bit Floating Point Conversion
x86-1616-bit x86
x86-3232-bit x86
x86-6464-bit x86
RealReal Mode
ProtectedProtected Mode
SMMSystem Management Mode
FPUIntegrated x87 FPU
NXNo-eXecute
HTHyper-Threading
TBT 2.0Turbo Boost Technology 2.0
TBMT 3.0Turbo Boost Max Technology 3.0
EISTEnhanced SpeedStep Technology
VT-xVT-x (Virtualization)
VT-dVT-d (I/O MMU virtualization)
EPTExtended Page Tables (SLAT)
TSXTransactional Synchronization Extensions

Frequencies[edit]

See also: Intel's CPU Frequency Behavior

[Modify Frequency Info]

ModeBaseTurbo Frequency/Active Cores
1234567891011121314
Normal3,100 MHz4,300 MHz4,300 MHz4,100 MHz4,100 MHz4,000 MHz4,000 MHz4,000 MHz4,000 MHz4,000 MHz4,000 MHz4,000 MHz4,000 MHz3,800 MHz3,800 MHz
Retrieved from "https://en.wikichip.org/w/index.php?title=intel/core_i9/i9-7940x&oldid=97267"
Facts about "Core i9-7940X - Intel"
RDF feed
l1$ size896 KiB (917,504 B, 0.875 MiB) +
l1d$ description8-way set associative +
l1d$ size448 KiB (458,752 B, 0.438 MiB) +
l1i$ description8-way set associative +
l1i$ size448 KiB (458,752 B, 0.438 MiB) +
l2$ description16-way set associative +
l2$ size14 MiB (14,336 KiB, 14,680,064 B, 0.0137 GiB) +
l3$ description11-way set associative +
l3$ size19.25 MiB (19,712 KiB, 20,185,088 B, 0.0188 GiB) +