i5-9400F vs i5-7640X

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Aggregate performance score

Core i5-7640X
2017
4 cores / 4 threads, 112 Watt
4.43
Core i5-9400F
2019
6 cores / 6 threads, 65 Watt
5.96
+34.5%

Core i5-9400F outperforms Core i5-7640X by a substantial 35% based on our aggregate benchmark results.

Primary details

Comparing Core i5-7640X and Core i5-9400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking13381108
Place by popularitynot in top-10024
Cost-effectiveness evaluation1.999.42
Market segmentDesktop processorDesktop processor
SeriesIntel Core i5Intel Core i5
Power efficiency3.748.68
Architecture codenameKaby Lake-X (2017)Coffee Lake-R (2018−2019)
Release date26 June 2017 (7 years ago)8 January 2019 (5 years ago)
Launch price (MSRP)$242$182

Cost-effectiveness evaluation

Performance per price, higher is better.

i5-9400F has 373% better value for money than i5-7640X.

Detailed specifications

Core i5-7640X 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)
Threads46
Base clock speed4 GHz2.9 GHz
Boost clock speed4.2 GHz4.1 GHz
Bus typeDMI 3.0DMI 3.0
Bus rate4 × 8 GT/s4 × 8 GT/s
Multiplier4029
L1 cache64K (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache6 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 multiplier+-

Compatibility

Information on Core i5-7640X 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 configuration1 (Uniprocessor)1 (Uniprocessor)
SocketFCLGA2066FCLGA1151
Power consumption (TDP)112 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-7640X 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++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technologyno data-
TSX+-
Idle Statesno data+
Thermal Monitoring-+

Security technologies

Core i5-7640X and Core i5-9400F technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-7640X and Core i5-9400F are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-7640X and Core i5-9400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4-2666
Maximum memory size64 GB128 GB
Max memory channels22
Maximum memory bandwidth42.671 GB/s42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardHD 630no data

Peripherals

Specifications and connection of peripherals supported by Core i5-7640X 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.

i5-7640X 4.43
i5-9400F 5.96
+34.5%

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.

i5-7640X 7036
i5-9400F 9468
+34.6%

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.

i5-7640X 1777
+26.6%
i5-9400F 1404

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.

i5-7640X 5301
+8%
i5-9400F 4908

Gaming performance

Pros & cons summary


Performance score 4.43 5.96
Recency 26 June 2017 8 January 2019
Physical cores 4 6
Threads 4 6
Power consumption (TDP) 112 Watt 65 Watt

i5-9400F has a 34.5% higher aggregate performance score, an age advantage of 1 year, 50% more physical cores and 50% more threads, and 72.3% lower power consumption.

The Core i5-9400F is our recommended choice as it beats the Core i5-7640X in performance tests.


Should you still have questions on choice between Core i5-7640X and Core i5-9400F, ask them in Comments section, and we shall answer.

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Intel Core i5-7640X
Core i5-7640X
Intel Core i5-9400F
Core i5-9400F

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

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