Core i5-9400F vs Core i7-7740X

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Aggregated performance score

Core i7-7740X
2017
4 cores / 8 threads
6.22
+1.5%
Core i5-9400F
2019
6 cores / 6 threads
6.13

Core i7-7740X outperforms Core i5-9400F by 1% based on our aggregated benchmark results.

General info

Comparing Core i7-7740X and Core i5-9400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking986992
Place by popularitynot in top-10030
Value for money9.7517.62
Market segmentDesktop processorDesktop processor
SeriesCore i7 (Desktop)Intel Core i5
Architecture codenameKaby Lake-X (2017)Coffee Lake-R (2018−2019)
Release date26 June 2017 (6 years ago)8 January 2019 (5 years ago)
Launch price (MSRP)$339$182
Current price$140 (0.4x MSRP)$138 (0.8x MSRP)

Value for money

Performance per price, higher is better.

i5-9400F has 81% better value for money than i7-7740X.

Technical specs

Core i7-7740X and Core i5-9400F 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 cores4 (Quad-Core)6 (Hexa-Core)
Threads86
Base clock speed4.3 GHz2.9 GHz
Boost clock speed4.5 GHz4.1 GHz
L1 cache64K (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache8 MB (shared)9 MB (shared)
Chip lithography14 nm14 nm
Die sizeno data149 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility-+
Unlocked multiplierYesNo

Compatibility

Information on Core i7-7740X and Core i5-9400F 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
SocketFCLGA2066FCLGA1151
Power consumption (TDP)112 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7740X and Core i5-9400F. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology+-
TSX+-
Idle Statesno data+
Thermal Monitoringno data+
SIPPno data-
StatusDiscontinuedDiscontinued

Security technologies

Core i7-7740X and Core i5-9400F technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Secure Keyno data+
MPXno data+
Identity Protectionno data+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7740X and Core i5-9400F are enumerated here.

AMD-V+no data
VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7740X and Core i5-9400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4-2666
Maximum memory size64 GB128 GB
Max memory channels22
Maximum memory bandwidth42 GB/s41.6 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardHD 630no data

Peripherals

Specifications and connection of peripherals supported by Core i7-7740X and Core i5-9400F.

PCIe version3.03.0
PCI Express lanes1616

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.

i7-7740X 6.22
+1.5%
i5-9400F 6.13

Core i7-7740X outperforms Core i5-9400F by 1% based on our aggregated benchmark results.


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%

i7-7740X 9611
+1.5%
i5-9400F 9472

Core i7-7740X outperforms Core i5-9400F by 1% in Passmark.

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.

Benchmark coverage: 42%

i7-7740X 1628
+18%
i5-9400F 1380

Core i7-7740X outperforms Core i5-9400F by 18% in GeekBench 5 Single-Core.

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.

Benchmark coverage: 42%

i7-7740X 5258
+8.9%
i5-9400F 4827

Core i7-7740X outperforms Core i5-9400F by 9% in GeekBench 5 Multi-Core.

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Benchmark coverage: 20%

i7-7740X 7397
+14%
i5-9400F 6490

Core i7-7740X outperforms Core i5-9400F by 14% in Cinebench 10 32-bit single-core.

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Benchmark coverage: 19%

i7-7740X 29538
i5-9400F 31523
+6.7%

Core i5-9400F outperforms Core i7-7740X by 7% in Cinebench 10 32-bit multi-core.

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Benchmark coverage: 18%

i7-7740X 5.44
+24.3%
i5-9400F 6.76

Core i5-9400F outperforms Core i7-7740X by 24% in wPrime 32.

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Benchmark coverage: 17%

i7-7740X 11
i5-9400F 11
+3.8%

Core i5-9400F outperforms Core i7-7740X by 4% in Cinebench 11.5 64-bit multi-core.

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Benchmark coverage: 15%

i7-7740X 991
+0.7%
i5-9400F 984

Core i7-7740X outperforms Core i5-9400F by 1% in Cinebench 15 64-bit multi-core.

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Benchmark coverage: 15%

i7-7740X 196
+13%
i5-9400F 173

Core i7-7740X outperforms Core i5-9400F by 13% in Cinebench 15 64-bit single-core.

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Benchmark coverage: 14%

i7-7740X 2.21
+13.3%
i5-9400F 1.95

Core i7-7740X outperforms Core i5-9400F by 13% in Cinebench 11.5 64-bit single-core.

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Benchmark coverage: 13%

i7-7740X 5.6
+7.7%
i5-9400F 5.2

Core i7-7740X outperforms Core i5-9400F by 8% in TrueCrypt AES.

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Benchmark coverage: 13%

i7-7740X 6417
+10.8%
i5-9400F 5794

Core i7-7740X outperforms Core i5-9400F by 11% in WinRAR 4.0.

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Benchmark coverage: 13%

i7-7740X 234
i5-9400F 234
+0.2%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Benchmark coverage: 13%

i7-7740X 62
i5-9400F 64
+3.7%

Core i5-9400F outperforms Core i7-7740X by 4% in x264 encoding pass 2.

Gaming performance

Advantages and disadvantages


Performance score 6.22 6.13
Recency 26 June 2017 8 January 2019
Physical cores 4 6
Threads 8 6
Cost $339 $182
Power consumption (TDP) 112 Watt 65 Watt

We couldn't decide between Core i7-7740X and Core i5-9400F. The differences in performance seem too small.


Should you still have questions on choice between Core i7-7740X and Core i5-9400F, ask them in Comments section, and we shall answer.

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Intel Core i7-7740X
Core i7-7740X
Intel Core i5-9400F
Core i5-9400F

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User Ratings

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Questions and comments

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