i7-7700K vs i9-10940X

VS

Aggregate performance score

Core i9-10940X
2019
14 cores / 28 threads, 165 Watt
17.59
+190%
Core i7-7700K
2017
4 cores / 8 threads, 91 Watt
6.07

Core i9-10940X outperforms Core i7-7700K by a whopping 190% based on our aggregate benchmark results.

Primary details

Comparing Core i9-10940X and Core i7-7700K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking3571099
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data1.44
Market segmentDesktop processorDesktop processor
Seriesno dataIntel Core i7 (Desktop)
Power efficiency10.096.31
Architecture codenameCascade Lake-X (2019)Kaby Lake (2016−2019)
Release date19 October 2019 (5 years ago)3 January 2017 (7 years ago)
Launch price (MSRP)no data$339

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-10940X and Core i7-7700K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores14 (Tetradeca-Core)4 (Quad-Core)
Threads288
Base clock speed3.3 GHz4.2 GHz
Boost clock speed4.8 GHz4.5 GHz
Bus typeno dataDMI 3.0
Bus rate8 GT/s DMI3 MHz4 × 8 GT/s
Multiplierno data42
L1 cache64K (per core)256 KB
L2 cache1 MB (per core)1 MB
L3 cache19.25 MB (shared)8 MB (shared)
Chip lithography14 nm14 nm
Maximum core temperature86 °C100 °C
Maximum case temperature (TCase)no data72 °C
64 bit support++
Windows 11 compatibility+-
Unlocked multiplier++

Compatibility

Information on Core i9-10940X and Core i7-7700K compatibility with other computer components: 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 configuration11 (Uniprocessor)
SocketFCLGA2066FCLGA1151
Power consumption (TDP)165 Watt91 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-10940X and Core i7-7700K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX++
Idle Statesno data+
Thermal Monitoring-+
Turbo Boost Max 3.0+no data
Deep Learning Boost+-

Security technologies

Core i9-10940X and Core i7-7700K technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB++
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-10940X and Core i7-7700K are enumerated here.

AMD-V-+
VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-10940X and Core i7-7700K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2933DDR3, DDR4
Maximum memory size256 GB64 GB
Max memory channels42
Maximum memory bandwidth94 GB/s38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel HD Graphics 630
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.15 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i9-10940X and Core i7-7700K integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Core i9-10940X and Core i7-7700K integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2304@24Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz

Graphics API support

APIs supported by Core i9-10940X and Core i7-7700K integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core i9-10940X and Core i7-7700K.

PCIe version3.03.0
PCI Express lanes4816

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark 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.

i9-10940X 17.59
+190%
i7-7700K 6.07

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.

i9-10940X 27939
+190%
i7-7700K 9647

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i9-10940X 1567
i7-7700K 1593
+1.7%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i9-10940X 10558
+105%
i7-7700K 5148

Gaming performance

Pros & cons summary


Performance score 17.59 6.07
Recency 19 October 2019 3 January 2017
Physical cores 14 4
Threads 28 8
Power consumption (TDP) 165 Watt 91 Watt

i9-10940X has a 189.8% higher aggregate performance score, an age advantage of 2 years, and 250% more physical cores and 250% more threads.

i7-7700K, on the other hand, has 81.3% lower power consumption.

The Core i9-10940X is our recommended choice as it beats the Core i7-7700K in performance tests.


Should you still have questions on choice between Core i9-10940X and Core i7-7700K, ask them in Comments section, and we shall answer.

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Intel Core i9-10940X
Core i9-10940X
Intel Core i7-7700K
Core i7-7700K

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Community ratings

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Questions & comments

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