Intel Core i7-1255U vs Intel Core i7-12700T

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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 i7-12700T features 12 processor cores and has the capability to manage 20 threads concurrently.
To use the Intel Core i7-12700T, you'll need a motherboard with a LGA 1700 socket.
Intel Core i7 Family Intel Core i7
Mobile Segment Desktop / Server
Intel Core i7-1255U Name Intel Core i7-12700T
Intel Core i 1200P/1200U Group Intel Core i 12000
12 Generation 12
 
 

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 i7-12700T has 12 CPU cores and can calculate 20 threads in parallel.
The clock frequency of the A-Core is 1.4 GHz.
4.7 GHz A-Core Frequency Turbo 4.7 GHz
3.5 GHz B-Core Frequency Turbo 3.4 GHz
1.7 GHz A-Core Frequency 1.4 GHz
1.2 GHz B-Core Frequency 1.0 GHz
10 CPU Cores 12
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
8x Gracemont Cores B 4x Gracemont
Yes Hyperthreading Yes
2x Golden Cove Cores A 8x Golden Cove
No Overclocking No
12 Threads 20
 
 

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 i7-12700T has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-12700T uses the Intel UHD Graphics 770, which has 256 texture shaders
and 32 execution units.
1.25 GHz GPU (Turbo) 1.5 GHz
Q1/2022 Release date Q4/2021
96 Execution units 32
12.1 Direct X 12
-- Max. displays --
768 Shaders 256
Intel Iris Xe Graphics 96 (Alder Lake) GPU name Intel UHD Graphics 770
0.35 GHz GPU frequency 0.3 GHz
32.0 GB Max. GPU Memory 64.0 GB
13 Generation 11
10 nm Technology 10 nm
 
 

Artificial Intelligence and Machine Learning

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

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 VP8 Decode / Encode
Decode / Encode VP9 Decode / Encode
Decode / Encode AVC Decode / Encode
Decode / Encode h264 Decode / Encode
Decode / Encode JPEG Decode / Encode
Decode VC-1 Decode
Decode AV1 Decode
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode / Encode h265 / HEVC (10 bit) 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.
The processor supports a maximum memory capacity of 128.0 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
64.0 GB Max. Memory 128.0 GB
76.8 GB/s Bandwidth 76.8 GB/s
DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200 Memory type DDR4-3200, DDR5-4800
pci PCIe pci
2 Memory channels 2
No ECC 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.
The processor has a thermal design power (TDP) of 35 W watts.
55 W TDP (PL2) 99 W
15 W TDP (PL1 / PBP) 35 W
100 °C Tjunction max 100 °C
 
 

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 i7-12700T is manufactured using a 10 nm process.
In total, this processor boasts a generous 25.0 MB cache.
Technical data sheet Documents Technical data sheet
Q1/2022 Release date Q1/2022
BGA 1744 Socket LGA 1700
6.5 MB L2-Cache 12.0 MB
12.0 MB L3-Cache 25.0 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
Alder Lake U Architecture Alder Lake S
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
-- Release price 339 $
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2, AVX2+
Monolithic Chip design Monolithic
10 nm Technology 10 nm