Intel Core i9-7940X

Intel Core i9-7940X
Benchmarks & Specs

Last updated:
The Intel Core i9-7940X, based on the Skylake X architecture, once stood out as a very powerful processor. Manufactured using the 14 nm process, it was distinguished by a considerable number of computing cores. With its 14 cores and 28 threads, it delivered a very high level of multithread performance.

It was an excellent choice, especially for professional users in areas such as content creation and rendering. It effortlessly supported demanding applications and complex workloads. A generous L3 cache of 19 MB ensured fast data access and improved efficiency. In addition, a maximum memory bandwidth of 85 GB/s further accelerated the data throughput.

The integrated support for PCIe 3.0 also offered numerous expansion options for peripherals. This processor was designed for demanding desktop systems at the time. Even today, the Intel Core i9-7940X is a capable partner for various tasks. It retains its strengths especially in applications that benefit from many cores.

We believe that the investment made at the time still pays off years later.
  • High Multithread Performance
  • Generous L3 Cache
  • Good Memory Bandwidth
  • PCIe 3.0 Support

Performance Overview
Average performance across multiple benchmarks

Single-core performance
Rank 377 / 867
In segment Desktop
Multi-core performance
Rank 178 / 821
In segment Desktop
Geekbench 6 Single-Core

Geekbench 6 Single-Core
Single-core performance

Intel Core i5-7640X
4C / 8T · 4.20 GHz
1,411
Intel Xeon Gold 6226R
16C / 32T · 3.90 GHz
1,411
Intel Core i9-7940X
14C / 28T · 4.30 GHz
1,410
Intel Core i7-7800X
6C / 12T · 4.20 GHz
1,406
Intel Core i5-8600
6C / 6T · 4.20 GHz
1,402
Geekbench 6 Multi-Core

Geekbench 6 Multi-Core
Multi-core performance

AMD Ryzen 9 PRO 3900
12C / 24T · 3.10 GHz
10,522
Intel Xeon E-2388G
8C / 16T · 3.20 GHz
10,458
Intel Core i9-7940X
14C / 28T · 3.70 GHz
10,425
Intel Core i5-12500
6C / 12T · 4.00 GHz
10,401
AMD Ryzen 7 5800
8C / 16T · 4.00 GHz
10,397
Geekbench 5, 64bit Single-Core

Geekbench 5, 64bit Single-Core
Single-core performance

AMD Ryzen 3 4100
4C / 8T · 4.00 GHz
1,134
AMD Ryzen 3 4300G
4C / 8T · 4.00 GHz
1,134
Intel Core i9-7940X
14C / 28T · 4.30 GHz
1,133
Intel Core i3-9320
4C / 4T · 4.40 GHz
1,132
Intel Core i5-8600
6C / 6T · 4.20 GHz
1,132
Geekbench 5, 64bit Multi-Core

Geekbench 5, 64bit Multi-Core
Multi-core performance

Intel Xeon Gold 5317
12C / 24T · 3.40 GHz
13,054
AMD Ryzen 9 3900XT
12C / 24T · 4.60 GHz
12,974
Intel Core i9-7940X
14C / 28T · 3.70 GHz
12,964
Intel Xeon Gold 6142
16C / 32T · 2.90 GHz
12,876
Intel Xeon Gold 6242
16C / 32T · 3.40 GHz
12,843
Blender 2.81 (bmw27)

Blender 2.81 (bmw27)
Multi-core performance

AMD Ryzen Threadripper 3990X
64C / 128T · 3.20 GHz
28.9 s
AMD Ryzen Threadripper 3970X
32C / 64T · 3.80 GHz
44.5 s
Intel Core i9-7940X
14C / 28T · 3.70 GHz
121.7 s
AMD Ryzen Threadripper 1950X
16C / 32T · 3.50 GHz
124.0 s
Intel Core i9-10900K
10C / 20T · 4.90 GHz
126.0 s
Cinebench R15 (Single-Core)

Cinebench R15 (Single-Core)
Single-core performance

Intel Core i5-10400
6C / 12T · 4.30 GHz
190 cb
Intel Core i5-10400F
6C / 12T · 4.30 GHz
190 cb
Intel Core i9-7940X
14C / 28T · 4.30 GHz
188 cb
Intel Xeon E3-1280 v6
4C / 8T · 4.20 GHz
187 cb
AMD Ryzen 3 PRO 4350G
4C / 8T · 4.00 GHz
186 cb
Cinebench R15 (Multi-Core)

Cinebench R15 (Multi-Core)
Multi-core performance

Intel Xeon E5-2698 v4
20C / 40T · 2.80 GHz
2,940 cb
Intel Core i9-9960X
16C / 32T · 4.10 GHz
2,872 cb
Intel Core i9-7940X
14C / 28T · 3.70 GHz
2,849 cb
Intel Xeon E5-2699 v4
22C / 44T · 2.80 GHz
2,840 cb
Intel Xeon Gold 6140M
18C / 36T · 2.80 GHz
2,785 cb

More benchmarks

At a glance

PropertyValue
FamilyIntel Core i9 (81)
CPU groupIntel Core i 7000X (9)
ArchitectureSkylake X
Technology14 nm
SegmentDesktop
SocketLGA 2066
Generation7
Predecessor
SuccessorIntel Core i9-9940X
Q4/2018

CPU Cores and Base Frequency

PropertyValue
CPU Cores / Threads14 / 28
Hyperthreading / SMT
Core architecturenormal
Cores: 14x
Frequency: 3.10 GHz
Turbo Frequency (1 Core): 4.30 GHz
Turbo Frequency (14 Cores): 3.70 GHz
L2-Cache
L3-Cache19.00 MB
OverclockingYes

Memory & PCIe

Memory typeMemory bandwidth
DDR4-2666
85.4 GB/s
PropertyValue
Max. Memory128 GB
Memory channels4
ECC
PCIe3.0 x 44
PCIe Bandwidth43.3 GB/s

Thermal Management

PropertyValue
TDP165 W
TDP (PL2)
TDP up
TDP down
T. junction max.

Technical details

PropertyValue
Chip designMonolithic
AES-NI
Operating systemsWindows 10, Linux
Instruction setx86-64 (64 bit)
ISA extensionsSSE4.1, SSE4.2, AVX2, AVX-512
Release dateQ4/2017
Release price1399 $
DocumentsTechnical data sheet
Intel Core i9-7940X
Intel Core i9-7940X
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