i5-8400T vs i7-14700HX

Primary details

Comparing Core i7-14700HX and Core i5-8400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	217	1269
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	4.83
Market segment	Laptop	Desktop processor
Series	Raptor Lake-HX	Intel Core i5
Power efficiency	40.44	12.68
Architecture codename	Raptor Lake-HX Refresh (2024)	Coffee Lake (2017−2019)
Release date	8 January 2024 (less than a year ago)	2 April 2018 (6 years ago)
Launch price (MSRP)	no data	$182

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-14700HX and Core i5-8400T 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	20 (Icosa-Core)	6 (Hexa-Core)
Threads	28	6
Base clock speed	2.1 GHz	1.7 GHz
Boost clock speed	5.4 GHz	3.3 GHz
Bus type	no data	DMI 3.0
Bus rate	157 MHz	4 × 8 GT/s
Multiplier	no data	17
L1 cache	80 KB (per core)	384 KB
L2 cache	2 MB (per core)	1.5 MB
L3 cache	33 MB (shared)	9 MB (shared)
Chip lithography	Intel 7 nm	14 nm
Die size	257 mm2	149 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	no data	+
Unlocked multiplier	+	-

Compatibility

Information on Core i7-14700HX and Core i5-8400T 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	FCBGA1964	FCLGA1151
Power consumption (TDP)	55 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-14700HX and Core i5-8400T. 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
AES-NI	+	+
FMA	+	-
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Core i7-14700HX and Core i5-8400T technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	no data	+
Secure Key	+	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-14700HX and Core i5-8400T are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-14700HX and Core i5-8400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR5	DDR4-2666
Maximum memory size	192 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	89.6 GB/s	42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® UHD Graphics for 14th Gen Intel® Processors	Intel UHD Graphics 630
Max video memory	no data	64 GB
Quick Sync Video	+	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	1.6 GHz	1.05 GHz
Execution Units	32	no data
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-14700HX and Core i5-8400T integrated GPUs.

Number of displays supported

4

3

Graphics image quality

Maximum display resolutions supported by Core i7-14700HX and Core i5-8400T integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	4096 x 2160 @ 60Hz	4096x2304@24Hz
Max resolution over eDP	5120 x 3200 @ 120Hz	4096x2304@60Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	4096x2304@60Hz

Graphics API support

APIs supported by Core i7-14700HX and Core i5-8400T integrated GPUs, sometimes API versions are included.

DirectX	12.1	12
OpenGL	4.6	4.5

Peripherals

Specifications and connection of peripherals supported by Core i7-14700HX and Core i5-8400T.

PCIe version	5.0 and 4.0	3.0
PCI Express lanes	16	16

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	23.95	4.78
Recency	8 January 2024	2 April 2018
Physical cores	20	6
Threads	28	6
Power consumption (TDP)	55 Watt	35 Watt

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Should you still have questions on choice between Core i7-14700HX and Core i5-8400T, ask them in Comments section, and we shall answer.

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