i5-1235U vs i9-7940X

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Aggregate performance score

Core i9-7940X
2017
14 cores / 28 threads, 165 Watt
16.34
+94.5%
Core i5-1235U
2022
10 cores / 12 threads, 15 Watt
8.40

Core i9-7940X outperforms Core i5-1235U by an impressive 95% based on our aggregate benchmark results.

Primary details

Comparing Core i9-7940X and Core i5-1235U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking408908
Place by popularitynot in top-10018
Cost-effectiveness evaluation3.30no data
Market segmentDesktop processorLaptop
SeriesIntel Core i9Intel Alder Lake-M
Power efficiency9.3752.96
Architecture codenameSkylake (server) (2017−2018)Alder Lake-U (2022)
Release date1 September 2017 (7 years ago)23 February 2022 (2 years ago)
Launch price (MSRP)$1,399no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-7940X and Core i5-1235U 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)10 (Deca-Core)
Threads2812
Base clock speed3.1 GHz1.3 GHz
Boost clock speed4.4 GHz4.4 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
L1 cache64 KB (per core)80K (per core)
L2 cache1 MB (per core)1.25 MB (per core)
L3 cache19.25 MB (shared)12 MB (shared)
Chip lithography14 nmIntel 7 nm
Die size484 mm2no data
Maximum core temperature102 °C100 °C
64 bit support++
Windows 11 compatibility++
Unlocked multiplier+-

Compatibility

Information on Core i9-7940X and Core i5-1235U 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
SocketFCLGA2066FCBGA1744
Power consumption (TDP)165 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7940X and Core i5-1235U. 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++
FMA-+
AVX++
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology2.0no data
Hyper-Threading Technology++
TSX++
Thermal Monitoring-+
Flex Memory Accessno data+
Turbo Boost Max 3.0+no data
Deep Learning Boost-+

Security technologies

Core i9-7940X and Core i5-1235U technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDB++
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7940X and Core i5-1235U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7940X and Core i5-1235U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4, DDR5
Maximum memory size128 GB64 GB
Max memory channels42
Maximum memory bandwidth85.33 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AIntel® Iris® Xe Graphics eligible
Quick Sync Video-+
Graphics max frequencyno data1.2 GHz
Execution Unitsno data80

Graphics interfaces

Available interfaces and connections of Core i9-7940X and Core i5-1235U integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Core i9-7940X and Core i5-1235U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2304 @ 60Hz
Max resolution over eDPno data4096 x 2304 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i9-7940X and Core i5-1235U integrated GPUs, sometimes API versions are included.

DirectXno data12.1
OpenGLno data4.6

Peripherals

Specifications and connection of peripherals supported by Core i9-7940X and Core i5-1235U.

PCIe version3.04.0
PCI Express lanes4420

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.

i9-7940X 16.34
+94.5%
i5-1235U 8.40

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.

i9-7940X 25963
+94.6%
i5-1235U 13343

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.

i9-7940X 1453
i5-1235U 1847
+27.1%

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.

i9-7940X 10604
+86.9%
i5-1235U 5673

Gaming performance

Pros & cons summary


Performance score 16.34 8.40
Recency 1 September 2017 23 February 2022
Physical cores 14 10
Threads 28 12
Power consumption (TDP) 165 Watt 15 Watt

i9-7940X has a 94.5% higher aggregate performance score, and 40% more physical cores and 133.3% more threads.

i5-1235U, on the other hand, has an age advantage of 4 years, and 1000% lower power consumption.

The Core i9-7940X is our recommended choice as it beats the Core i5-1235U in performance tests.

Note that Core i9-7940X is a desktop processor while Core i5-1235U is a notebook one.


Should you still have questions on choice between Core i9-7940X and Core i5-1235U, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i9-7940X
Core i9-7940X
Intel Core i5-1235U
Core i5-1235U

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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

Here you can ask a question about Core i9-7940X or Core i5-1235U, agree or disagree with our judgements, or report an error or mismatch.