i5-12400T vs Celeron 3955U

Primary details

Comparing Celeron 3955U and Core i5-12400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2504	754
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Celeron	no data
Power efficiency	5.90	27.62
Architecture codename	Skylake (2015−2016)	Alder Lake-S (2022)
Release date	15 August 2015 (9 years ago)	January 2022 (2 years ago)
Launch price (MSRP)	$107	no data

Detailed specifications

Celeron 3955U and Core i5-12400T 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	2 (Dual-core)	6 (Hexa-Core)
Threads	2	12
Base clock speed	2 GHz	1.8 GHz
Boost clock speed	2 GHz	4.2 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	20	no data
L1 cache	128 KB	80K (per core)
L2 cache	512 KB	1.25 MB (per core)
L3 cache	2 MB	18 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	98.57 mm2	163 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	1750 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Celeron 3955U and Core i5-12400T 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 (Uniprocessor)	1
Socket	FCBGA1356	FCLGA1700
Power consumption (TDP)	15 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3955U and Core i5-12400T. You'll probably need this information if you require some particular technology.

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

Security technologies

Celeron 3955U and Core i5-12400T technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3955U and Core i5-12400T are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3955U and Core i5-12400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600	DDR5-4800, DDR4-3200
Maximum memory size	32 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	76.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 510	Intel UHD Graphics 730
Max video memory	32 GB	no data
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	900 MHz	1.45 GHz
Execution Units	no data	24

Graphics interfaces

Available interfaces and connections of Celeron 3955U and Core i5-12400T integrated GPUs.

Number of displays supported	3	4
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Celeron 3955U and Core i5-12400T integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Celeron 3955U and Core i5-12400T integrated GPUs, sometimes API versions are included.

DirectX	12	12
OpenGL	4.4	4.5

Peripherals

Specifications and connection of peripherals supported by Celeron 3955U and Core i5-12400T.

PCIe version	3.0	5.0 and 4.0
PCI Express lanes	12	20

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	0.97	10.60
Integrated graphics card	1.61	4.15
Physical cores	2	6
Threads	2	12
Power consumption (TDP)	15 Watt	35 Watt

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Should you still have questions on choice between Celeron 3955U and Core i5-12400T, ask them in Comments section, and we shall answer.

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