i9-7940X vs i5-13400

Primary details

Comparing Core i5-13400 and Core i9-7940X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	486	403
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	44.10	2.91
Market segment	Desktop processor	Desktop processor
Series	no data	Intel Core i9
Power efficiency	21.26	9.37
Architecture codename	Raptor Lake-S (2023−2024)	Skylake (server) (2017−2019)
Release date	4 January 2023 (1 year ago)	30 May 2017 (7 years ago)
Launch price (MSRP)	$221	$1,399

Cost-effectiveness evaluation

Performance per price, higher is better.

i5-13400 has 1415% better value for money than i9-7940X.

Detailed specifications

Core i5-13400 and Core i9-7940X 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 cores	10 (Deca-Core)	14 (Tetradeca-Core)
Threads	16	28
Base clock speed	2.5 GHz	3.1 GHz
Boost clock speed	4.6 GHz	4.4 GHz
Bus type	no data	DMI 3.0
Bus rate	no data	4 × 8 GT/s
L1 cache	80K (per core)	896 KB
L2 cache	1.25 MB (per core)	14 MB
L3 cache	20 MB (shared)	19.25 MB (shared)
Chip lithography	Intel 7 nm	14 nm
Die size	257 mm2	484 mm2
Maximum core temperature	100 °C	102 °C
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	-	+

Compatibility

Information on Core i5-13400 and Core i9-7940X 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 configuration	1	1 (Uniprocessor)
Socket	FCLGA1700	FCLGA2066
Power consumption (TDP)	65 Watt	165 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-13400 and Core i9-7940X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	-	+
Deep Learning Boost	+	-

Security technologies

Core i5-13400 and Core i9-7940X technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	+
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-13400 and Core i9-7940X are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-13400 and Core i9-7940X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4800, DDR4-3200	DDR4-2666
Maximum memory size	192 GB	128 GB
Max memory channels	2	4
Maximum memory bandwidth	76.8 GB/s	85.33 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 730	N/A
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.55 GHz	no data
Execution Units	24	no data

Graphics interfaces

Available interfaces and connections of Core i5-13400 and Core i9-7940X integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core i5-13400 and Core i9-7940X integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2160 @ 60Hz	no data
Max resolution over eDP	5120 x 3200 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core i5-13400 and Core i9-7940X integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-13400 and Core i9-7940X.

PCIe version	5.0 and 4.0	3.0
PCI Express lanes	16	44

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	14.60	16.34
Recency	4 January 2023	30 May 2017
Physical cores	10	14
Threads	16	28
Power consumption (TDP)	65 Watt	165 Watt

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Should you still have questions on choice between Core i5-13400 and Core i9-7940X, ask them in Comments section, and we shall answer.

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