Intel Core i7-1255U vs Intel Core i7-1265U

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i7-1255U or Intel Core i7-1255U – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i7-1255U features 10 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q1/2022 and belongs to the 12 generation of the Intel Core i7 series.
To use the Intel Core i7-1255U, you'll need a motherboard with a BGA 1744 socket.
The Intel Core i7-1265U features 10 processor cores and has the capability to manage 12 threads concurrently.
To use the Intel Core i7-1265U, you'll need a motherboard with a BGA 1744 socket.
12 Generation 12
Intel Core i7-1255U Name Intel Core i7-1265U
Intel Core i7 Family Intel Core i7
Mobile Segment Mobile
Intel Core i 1200P/1200U Group Intel Core i 1200P/1200U
 
 

CPU Cores and Base Frequency

The Intel Core i7-1255U has 10 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the A-Core is 1.7 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
Processors with hybrid (big.LITTLE) architecture strike a balance between performance and power efficiency, making them ideal for mobile devices.
The Intel Core i7-1265U has 10 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the A-Core is 1.8 GHz.
12 Threads 12
Yes Hyperthreading Yes
1.7 GHz A-Core Frequency 1.8 GHz
2x Golden Cove Cores A 2x Golden Cove
4.7 GHz A-Core Frequency Turbo 4.8 GHz
10 CPU Cores 10
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
8x Gracemont Cores B 8x Gracemont
1.2 GHz B-Core Frequency 1.3 GHz
No Overclocking No
3.5 GHz B-Core Frequency Turbo 3.6 GHz
 
 

Internal Graphics

The Intel Core i7-1255U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-1255U uses the Intel Iris Xe Graphics 96 (Alder Lake), which has 768 texture shaders
and 96 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The Intel Core i7-1265U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-1265U uses the Intel Iris Xe Graphics 96 (Alder Lake), which has 768 texture shaders
Intel Iris Xe Graphics 96 (Alder Lake) GPU name Intel Iris Xe Graphics 96 (Alder Lake)
768 Shaders 768
10 nm Technology 10 nm
0.35 GHz GPU frequency 0.35 GHz
96 Execution units 96
1.25 GHz GPU (Turbo) 1.25 GHz
12.1 Direct X 12.1
13 Generation 13
32.0 GB Max. GPU Memory 32.0 GB
Q1/2022 Release date Q1/2022
-- Max. displays --
 
 

Artificial Intelligence and Machine Learning

-- AI hardware --
-- AI specifications --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode / Encode JPEG Decode / Encode
Decode AV1 Decode
Decode VC-1 Decode
Decode / Encode h265 / HEVC (10 bit) Decode / Encode
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode / Encode h264 Decode / Encode
Decode VP8 Decode
Decode / Encode AVC Decode / Encode
Decode / Encode VP9 Decode / Encode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 76.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
Yes AES-NI Yes
No ECC No
pci PCIe pci
DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200 Memory type DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200
2 Memory channels 2
64.0 GB Max. Memory 64.0 GB
76.8 GB/s Bandwidth 76.8 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 15 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
55 W TDP (PL2) 55 W
100 °C Tjunction max 100 °C
15 W TDP (PL1 / PBP) 15 W
 
 

Technical details

The Intel Core i7-1255U is manufactured using a 10 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 12.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i7-1265U is manufactured using a 10 nm process.
-- Release price --
10 nm Technology 10 nm
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
Technical data sheet Documents Technical data sheet
6.5 MB L2-Cache 6.5 MB
12.0 MB L3-Cache 12.0 MB
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
-- Part Number --
Monolithic Chip design Monolithic
BGA 1744 Socket BGA 1744
Alder Lake U Architecture Alder Lake U
Q1/2022 Release date Q1/2022
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11