Celeron 3955U vs Ultra 7 155H

Primary details

Comparing Core Ultra 7 155H and Celeron 3955U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	425	2507
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Meteor Lake-H	Intel Celeron
Power efficiency	53.21	5.88
Architecture codename	Meteor Lake-H (2023)	Skylake (2015−2016)
Release date	14 December 2023 (less than a year ago)	15 August 2015 (9 years ago)
Launch price (MSRP)	$503	$107

Detailed specifications

Core Ultra 7 155H and Celeron 3955U 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	16 (Hexadeca-Core)	2 (Dual-core)
Threads	22	2
Base clock speed	3.8 GHz	2 GHz
Boost clock speed	4.8 GHz	2 GHz
Bus type	no data	OPI
Bus rate	no data	4 GT/s
Multiplier	no data	20
L1 cache	112 KB (per core)	128 KB
L2 cache	2 MB (per core)	512 KB
L3 cache	24 MB (shared)	2 MB
Chip lithography	Intel 4 nm	14 nm
Die size	no data	98.57 mm2
Maximum core temperature	110 °C	100 °C
Number of transistors	no data	1750 Million
64 bit support	+	+
Windows 11 compatibility	no data	-

Compatibility

Information on Core Ultra 7 155H and Celeron 3955U 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	FCBGA2049	FCBGA1356
Power consumption (TDP)	28 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155H and Celeron 3955U. 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
AES-NI	+	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
My WiFi	no data	+
Turbo Boost Technology	no data	-
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Smart Response	no data	+
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 7 155H and Celeron 3955U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 7 155H and Celeron 3955U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155H and Celeron 3955U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600
Maximum memory size	96 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	34.134 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ graphics	Intel HD Graphics 510
Max video memory	no data	32 GB
Quick Sync Video	+	+
Clear Video HD	no data	+
Graphics max frequency	2.25 GHz	900 MHz

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155H and Celeron 3955U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155H and Celeron 3955U integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	4096x2304@24Hz
Max resolution over eDP	3840x2400 @ 120Hz	4096x2304@60Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	4096x2304@60Hz
Max resolution over VGA	no data	N/A

Graphics API support

APIs supported by Core Ultra 7 155H and Celeron 3955U integrated GPUs, sometimes API versions are included.

DirectX	12.2	12
OpenGL	4.6	4.4

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155H and Celeron 3955U.

PCIe version	5.0	3.0
PCI Express lanes	8	12
PCI support	5.0 and 4.0	no data

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	16.04	0.95
Recency	14 December 2023	15 August 2015
Physical cores	16	2
Threads	22	2
Power consumption (TDP)	28 Watt	15 Watt

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Should you still have questions on choice between Core Ultra 7 155H and Celeron 3955U, ask them in Comments section, and we shall answer.

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