i7-1265U vs Ultra 7 255H

Primary details

Comparing Core Ultra 7 255H and Core i7-1265U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	343	906
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	no data	Intel Alder Lake-M
Power efficiency	14.93	54.45
Architecture codename	no data	Alder Lake-U (2022)
Release date	1 January 2025 (less than a year ago)	23 February 2022 (2 years ago)

Detailed specifications

Core Ultra 7 255H and Core i7-1265U 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)	10 (Deca-Core)
Performance-cores	6	2
Efficient-cores	8	8
Low Power Efficient-cores	2	no data
Threads	16	12
Base clock speed	no data	1.8 GHz
Boost clock speed	5.1 GHz	4.8 GHz
L1 cache	no data	80K (per core)
L2 cache	no data	1.25 MB (per core)
L3 cache	24 MB	12 MB (shared)
Chip lithography	no data	Intel 7 nm
Maximum core temperature	no data	100 °C
64 bit support	+	+
Windows 11 compatibility	no data	+

Compatibility

Information on Core Ultra 7 255H and Core i7-1265U 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
Socket	FCBGA2049	FCBGA1744
Power consumption (TDP)	115 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 255H and Core i7-1265U. 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)	no data	+
Speed Shift	+	+
Hyper-Threading Technology	-	+
TSX	-	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
SIPP	-	+
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	+
Supported AI Software Frameworks	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN	-

Security technologies

Core Ultra 7 255H and Core i7-1265U technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 7 255H and Core i7-1265U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 255H and Core i7-1265U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-6400	DDR4, DDR5
Maximum memory size	128 GB	64 GB
Max memory channels	2	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ 140T GPU	Intel® Iris® Xe Graphics eligible
Quick Sync Video	+	+
Graphics max frequency	2.25 GHz	1.25 GHz
Execution Units	no data	96

Graphics interfaces

Available interfaces and connections of Core Ultra 7 255H and Core i7-1265U integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 255H and Core i7-1265U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	4096 x 2304 @ 60Hz
Max resolution over eDP	3840x2400 @ 120Hz	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core Ultra 7 255H and Core i7-1265U integrated GPUs, sometimes API versions are included.

DirectX	12.2	12.1
OpenGL	4.6	4.6

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 255H and Core i7-1265U.

PCIe version	no data	4.0
PCI Express lanes	28	20
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	18.02	8.57
Recency	1 January 2025	23 February 2022
Physical cores	16	10
Threads	16	12
Power consumption (TDP)	115 Watt	15 Watt

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Should you still have questions on choice between Core Ultra 7 255H and Core i7-1265U, ask them in Comments section, and we shall answer.

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