Intel Core i5-1245U vs Intel Core i7-1255U

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i5-1245U or Intel Core i5-1245U – 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 i5-1245U 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 i5 series.
To use the Intel Core i5-1245U, you'll need a motherboard with a BGA 1744 socket.
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.
Intel Core i5-1245U Name Intel Core i7-1255U
12 Generation 12
Mobile Segment Mobile
Intel Core i5 Family Intel Core i7
Intel Core i 1200P/1200U Group Intel Core i 1200P/1200U
 
 

CPU Cores and Base Frequency

The Intel Core i5-1245U has 10 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the A-Core is 1.6 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 i7-1255U has 10 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the A-Core is 1.7 GHz.
Yes Hyperthreading Yes
1.2 GHz B-Core Frequency 1.2 GHz
No Overclocking No
12 Threads 12
4.4 GHz A-Core Frequency Turbo 4.7 GHz
2x Golden Cove Cores A 2x Golden Cove
8x Gracemont Cores B 8x Gracemont
3.3 GHz B-Core Frequency Turbo 3.5 GHz
1.6 GHz A-Core Frequency 1.7 GHz
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
10 CPU Cores 10
 
 

Internal Graphics

The Intel Core i5-1245U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-1245U uses the Intel Iris Xe Graphics 80 (Alder Lake), which has 640 texture shaders
and 80 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
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.
80 Execution units 96
Intel Iris Xe Graphics 80 (Alder Lake) GPU name Intel Iris Xe Graphics 96 (Alder Lake)
12.1 Direct X 12.1
0.35 GHz GPU frequency 0.35 GHz
32.0 GB Max. GPU Memory 32.0 GB
1.2 GHz GPU (Turbo) 1.25 GHz
13 Generation 13
Q1/2022 Release date Q1/2022
-- Max. displays --
10 nm Technology 10 nm
640 Shaders 768
 
 

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 / Encode AVC Decode / Encode
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode VP8 Decode
Decode VC-1 Decode
Decode AV1 Decode
Decode / Encode VP9 Decode / Encode
Decode / Encode h265 / HEVC (10 bit) Decode / Encode
Decode / Encode h264 Decode / Encode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 GB distributed across 4 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.
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.
pci PCIe pci
4 Memory channels 2
DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200 Memory type DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200
64.0 GB Max. Memory 64.0 GB
No ECC No
76.8 GB/s Bandwidth 76.8 GB/s
Yes AES-NI Yes
 
 

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.
15 W TDP (PL1 / PBP) 15 W
100 °C Tjunction max 100 °C
55 W TDP (PL2) 55 W
 
 

Technical details

The Intel Core i5-1245U 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 i7-1255U is manufactured using a 10 nm process.
6.5 MB L2-Cache 6.5 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
-- Part Number --
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
12.0 MB L3-Cache 12.0 MB
Alder Lake U Architecture Alder Lake U
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Release price --
Technical data sheet Documents Technical data sheet
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
Monolithic Chip design Monolithic
Q1/2022 Release date Q1/2022
BGA 1744 Socket BGA 1744
10 nm Technology 10 nm