Intel Core i9-7940X: specs and benchmarks

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Intel Core i9-7940X
Intel Core i9-7940X
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Year of release 2017
Performance 25.52

Summary

Intel started Intel Core i9-7940X sales 1 September 2017 at a recommended price of $1,399. Based on Skylake (server) architecture, this desktop processor is primarily aimed at home systems. It has 14 cores and 28 threads, and is based on 14 nm manufacturing technology, with a max turbo frequency of 4400 MHz and an unlocked multiplier.

Compatibility-wise, this is FCLGA2066 processor with a TDP of 165 Watt. It supports DDR4-2666 memory.

It provides good benchmark performance at

25.52%

of a leader's which is AMD Ryzen Threadripper PRO 5995WX.

General info

Of Core i9-7940X processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance rating173
Value for money24.05
Market segmentDesktop processor
SeriesIntel Core i9
Architecture codenameSkylake (server) (2017−2019)
Release date1 September 2017 (4 years ago)
Launch price (MSRP)$1,399of 305 (Core i7-870)
Price now$665 (0.5x MSRP)of 14999 (Xeon Platinum 9282)
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores14 (Tetradeca-Core)
Threads28
Base clock speed3.1 GHzof 4.7 (FX-9590)
Boost clock speed4.4 GHzof 5.5 (Core i9-12900KS)
Bus support4 × 8 GT/s
L1 cache64K (per core)of 1536 (EPYC Embedded 3401)
L2 cache1 MB (per core)of 12 (Core 2 Quad Q9550)
L3 cache19.25 MB (shared)of 32 (Ryzen Threadripper 1998)
Chip lithography14 nmof 5 (Apple M1)
Maximum core temperature102 °Cof 110 (Atom x7-E3950)
64 bit support+
Windows 11 compatibility+
Unlocked multiplier+

Compatibility

Information on Core i9-7940X compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1of 8 (Opteron 842)
SocketFCLGA2066
Thermal design power (TDP)165 Wattof 400 (Xeon Platinum 9282)

Technologies and extensions

Technological capabilities and additional instructions supported by Core i9-7940X. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI+
AVX+
Enhanced SpeedStep (EIST)+
Turbo Boost Technology2.0
Hyper-Threading Technology+
Turbo Boost Max 3.0+

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

EDB+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d+
VT-x+

Memory specs

Types, maximum amount and channel number of RAM supported by Core i9-7940X's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR4-2666of 4800 (Ryzen 9 6980HX)
Maximum memory size128 GBof 786 (Xeon E5-2670 v3)
Max memory channels4of 12 (Xeon Platinum 9221)
Maximum memory bandwidth85 GB/sof 281.6 (Xeon Platinum 9221)
ECC memory support-

Graphics specifications

General parameters of GPU integrated into Core i9-7940X.

Integrated graphics card-

Peripherals

Specifications and connection types of supported peripherals.

PCIe version3.0
PCI Express lanes44of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Core i9-7940X. Overall benchmark performance is measured in points in 0-100 range, higher is better.


Overall score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-7940X 25.52
  • Passmark
  • GeekBench 5 Single-Core
  • GeekBench 5 Multi-Core

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

i9-7940X 26448

GeekBench 5 Single-Core

Benchmark coverage: 37%

i9-7940X 1121

GeekBench 5 Multi-Core

Benchmark coverage: 37%

i9-7940X 12862

Game benchmarks

Relative perfomance

Overall Core i9-7940X performance compared to nearest competitors among desktop CPUs.


AMD equivalent

We believe that the nearest equivalent to Core i9-7940X from AMD is Ryzen 7 5700X, which is nearly equal in speed and higher by 1 position in our rating.

AMD Ryzen 7 5700X Ryzen 7 5700X
Compare

Here are some closest AMD rivals to Core i9-7940X:

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

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AMD Ryzen Threadripper 2920X Ryzen Threadripper 2920X
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AMD Ryzen Threadripper 1950X Ryzen Threadripper 1950X
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Intel Core i9-9940X Core i9 9940X
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Recommended graphics cards

These graphics cards are most commonly used with Core i9-7940X according to our statistics.

User rating

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.


4.4 18 ratings

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Questions and comments

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