Intel Core i7-1255U Benchmark, Test and specs

Last updated: 2023-11-07

The Intel Core i7-1255U has 10 cores with 12 threads and is based on the 12. gen of the Intel Core i7 series. The processor uses a mainboard with the BGA 1744 socket and was released in Q1/2022. The Intel Core i7-1255U scores 1,603 points in the Geekbench 5 single-core benchmark. In the Geekbench 5 multi-core benchmark, the result is 7,612 points.

CPU lineage
The segment in which we have classified the Intel Core i7-1255U. Here you can see if it is a desktop processor or a mobile processor or which processor may be the successor of the Intel Core i7-1255U.
Name:	Intel Core i7-1255U
Family:	Intel Core i7 (298)
CPU group:	Intel Core i 1200P/1200U (21)
Architecture:	Alder Lake U
Segment:	Mobile
Generation:	12
Predecessor:	--
Successor:	Intel Core i7-1355U

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 Intel Core i7-1255U is 1.70 GHz (4.70 GHz). The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.

CPU Cores / Threads:	10 / 12
Core architecture:	hybrid (big.LITTLE)
A-Core:	2x Golden Cove
B-Core:	8x Gracemont

Hyperthreading / SMT:	Yes
Overclocking:	No
A-Core Frequency:	1.70 GHz (4.70 GHz)
B-Core Frequency:	1.20 GHz (3.50 GHz)

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AI hardware:	--
AI specifications:	--

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.

GPU name:	Intel Iris Xe Graphics 96 (Alder Lake)
GPU frequency:	0.35 GHz
GPU (Turbo):	1.25 GHz
Compute units:	96
Shader:	768
Hardware Raytracing:	No
Release date:	Q1/2022

Max. displays:	4
Generation:	13
Direct X:	12.1
Technology:	10 nm
Max. GPU Memory:	32 GB
Frame Generation:	No

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.

h265 / HEVC (8 bit):	Decode / Encode
h265 / HEVC (10 bit):	Decode / Encode
h264:	Decode / Encode
VP8:	Decode
VP9:	Decode / Encode

AV1:	Decode
AVC:	Decode / Encode
VC-1:	Decode
JPEG:	Decode / Encode

Memory type:	Memory bandwidth:
Memory & PCIe The processor can use up to 64 GB memory in 2 (Dual Channel) memory channels. The maximum memory bandwidth is 83.2 GB/s. The memory type as well as the amount of memory can greatly affect the speed of the system.

LPDDR5-5200 LPDDR4X-4266 DDR5-4800 DDR4-3200	83.2 GB/s 68.2 GB/s 76.8 GB/s 51.2 GB/s
Max. Memory:	64 GB
Memory channels:	2 (Dual Channel)
ECC:	No
PCIe:	4.0 x 28
PCIe Bandwidth:	55.1 GB/s

Thermal Management The thermal design power (TDP for short) of the processor is 15 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. The TDP usually gives a rough idea of the actual power consumption of the CPU.

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

Technical details

The Intel Core i7-1255U is made in 10 nm. The smaller the manufacturing process of a CPU, the more modern and energy-efficient it is. Overall, the processor has 18.50 MB cache. A large cache can greatly speed up the processor's speed in some cases such as games.

Technology:	10 nm
Chip design:	Monolithic
Socket:	BGA 1744
L2-Cache:	6.50 MB
L3-Cache:	12.00 MB
AES-NI:	Yes
Operating systems:	Windows 10, Windows 11, Linux

Virtualization:	VT-x, VT-x EPT, VT-d
Instruction set (ISA):	x86-64 (64 bit)
ISA extensions:	SSE4.1, SSE4.2, AVX2
Release date:	Q1/2022
Release price:	--
Part Number:	--
Documents:	Technical data sheet

Intel Core i7-1255U
10C 12T @ 1.70 GHz (4.70 GHz)

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Benchmark results

The benchmark results for the Intel Core i7-1255U have been carefully checked by us. We only publish benchmark results that have been created by us or that have been submitted by a visitor and then checked by a team member. All results are based on and fullfill our benchmark guidelines.

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	Intel Core i5-14400 10C 16T @ 4.70 GHz	1773
	Intel Core i5-14400F 10C 16T @ 4.70 GHz	1773
	Intel Core i7-1260P 12C 16T @ 4.70 GHz	1773
	Intel Core i7-1255U 10C 12T @ 4.70 GHz	1761
	Intel Core Ultra 7 155H 16C 22T @ 4.80 GHz	1761
	AMD Ryzen 7 PRO 8840HS 8C 16T @ 5.10 GHz	1757
	AMD Ryzen 7 PRO 8845HS 8C 16T @ 5.10 GHz	1757

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	Apple M1 8C 8T @ 3.20 GHz	7759
	Apple M1 (7-GPU) 8C 8T @ 3.20 GHz	7759
	AMD Ryzen 5 2600 6C 12T @ 3.70 GHz	7555
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	7545
	AMD Ryzen 5 2600X 6C 12T @ 4.00 GHz	7514
	Intel Core i7-10850H 6C 12T @ 3.40 GHz	7455
	Intel Core i5-9600KF 6C 6T @ 4.30 GHz	7301

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	AMD Ryzen Threadripper PRO 5975WX 32C 64T @ 4.50 GHz	1604
	AMD Ryzen Threadripper PRO 5995WX 64C 128T @ 4.50 GHz	1604
	Intel Xeon E-2314 4C 4T @ 4.50 GHz	1604
	Intel Core i7-1255U 10C 12T @ 4.70 GHz	1603
	Intel Core i9-11900H 8C 16T @ 4.90 GHz	1599
	Intel Core i7-1250U 10C 12T @ 4.70 GHz	1596
	Intel Core i7-1260U 10C 12T @ 4.70 GHz	1596

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	AMD Ryzen Embedded V2546 6C 12T @ 3.00 GHz	7647
	AMD Ryzen 7 5700U 8C 16T @ 3.30 GHz	7640
	AMD EPYC 7282 16C 32T @ 3.00 GHz	7638
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	7612
	AMD Ryzen 5 5600G 6C 12T @ 4.20 GHz	7612
	AMD Ryzen 7 4800HS 8C 16T @ 3.80 GHz	7608
	Intel Xeon Gold 5315Y 8C 16T @ 3.60 GHz	7589

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.


	Intel Xeon W-11855M 6C 12T @ 4.90 GHz	2142
	Intel Core i5-11600K 6C 12T @ 4.90 GHz	2138
	Intel Core i5-11600KF 6C 12T @ 4.90 GHz	2138
	Intel Core i7-1255U 10C 12T @ 4.70 GHz	2136
	AMD Ryzen 7 5800X 8C 16T @ 4.70 GHz	2136
	Intel Core i3-13100T 4C 8T @ 4.20 GHz	2134
	AMD Ryzen 9 5900 12C 24T @ 4.70 GHz	2130

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.


	Intel Core i7-10875H 8C 16T @ 3.20 GHz	6960
	AMD Ryzen Threadripper 1920X 12C 24T @ 3.60 GHz	6951
	Intel Core i9-9980HK 8C 16T @ 3.40 GHz	6927
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	6908
	Intel Core i7-7800X 6C 12T @ 3.90 GHz	6897
	AMD Ryzen 9 5900HS 8C 16T @ 4.00 GHz	6886
	Intel Core i9-10880H 8C 16T @ 2.30 GHz	6879

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	Intel Core i5-1335U 10C 12T @ 4.60 GHz	652
	Intel Core i9-11900K 8C 16T @ 5.30 GHz	650
	Intel Core i9-11900KF 8C 16T @ 5.30 GHz	650
	Intel Core i7-1255U 10C 12T @ 4.70 GHz	649
	AMD Ryzen 9 6980HS 8C 16T @ 5.00 GHz	649
	AMD Ryzen 9 6980HX 8C 16T @ 5.00 GHz	649
	AMD Ryzen 9 5950X 16C 32T @ 4.90 GHz	647

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	AMD Ryzen 7 2700E 8C 16T @ 3.20 GHz	3065
	Intel Core i7-5930K 6C 12T @ 3.60 GHz	3052
	AMD Ryzen 5 2600X 6C 12T @ 4.00 GHz	3048
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	3009
	AMD Ryzen 7 PRO 4750U 8C 16T @ 3.10 GHz	3007
	Intel Core i5-10600T 6C 12T @ 3.70 GHz	2993
	Intel Core i7-10850H 6C 12T @ 3.40 GHz	2839

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.


	Intel Core Ultra 7 155U Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.95 GHz	1935
	Intel Core Ultra 7 155UL Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.95 GHz	1935
	Intel Core i7-1165G7 Intel Iris Xe Graphics 96 (Tiger Lake) @ 1.30 GHz	1933
	Intel Core i7-1255U Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz	1916
	Intel Core i7-1255UL Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz	1916
	Intel Core i7-1265UL Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz	1916
	Intel Core i7-1265U Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz	1916

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.


	Intel Xeon E5-2667 v4 8C 16T @ 3.40 GHz	13948
	Intel Xeon Silver 4210 10C 20T @ 2.40 GHz	13924
	Intel Xeon E5-1660 v2 6C 12T @ 3.80 GHz	13919
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	13905
	Intel Xeon W-1250E 6C 12T @ 4.20 GHz	13894
	Intel Core i3-12100F 4C 8T @ 4.00 GHz	13880
	Intel Core i3-12100 4C 8T @ 4.00 GHz	13880

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	AMD Ryzen 7 5700G 8C 16T @ 4.60 GHz	250
	AMD Ryzen 7 5800X3D 8C 16T @ 4.50 GHz	249
	AMD Ryzen 9 5980HS 8C 16T @ 4.80 GHz	247
	Intel Core i7-1255U 10C 12T @ 4.70 GHz	245
	Intel Core i5-11600KF 6C 12T @ 4.90 GHz	245
	Intel Core i3-12100F 4C 8T @ 4.30 GHz	242
	Intel Core i3-12100 4C 8T @ 4.30 GHz	242

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	Intel Core i7-9700K 8C 8T @ 4.60 GHz	1520
	AMD Ryzen 5 PRO 4650G 6C 12T @ 4.15 GHz	1516
	Intel Xeon W-2235 6C 12T @ 4.60 GHz	1514
	Intel Core i7-1255U 10C 12T @ 2.70 GHz	1498
	Intel Core i5-10500 6C 12T @ 4.20 GHz	1491
	Intel Core i7-9700F 8C 8T @ 3.80 GHz	1491
	Intel Core i7-9700 8C 8T @ 3.80 GHz	1491

Benchmarks

Cinebench R23 (SC)
586 entries

Cinebench R23 (MC)
565 entries

Geekbench 5 (SC)
2,488 entries

Geekbench 5 (MC)
2,461 entries

Geekbench 6 (SC)
1,755 entries

Geekbench 6 (MC)
1,703 entries

Cinebench R20 (SC)
656 entries

Cinebench R20 (MC)
604 entries

FP32 SP (iGPU)
2,042 entries

3DMark Timespy (iGPU)
516 entries

PassMark CPU-Mark
2,392 entries

V-Ray CPU-Render
249 entries

Cinebench R15 (SC)
1,106 entries

Cinebench R15 (MC)
1,101 entries

Description of the processor

The Intel Core i7-1255U was launched by Intel in the first quarter of 2022 and comes from the mobile sector of Intels CPU program. It is only permanently installed and is based on the BGA 1744 socket.

The Intel Core i7-1255U from the Alder Lake U series is manufactured using the 10-nanometer process and is based on a big.LITTLE core architecture. Two performance cores (codename "Golden Cove") with hyperthreading are used here, which have a standard clock of 1.70 gigahertz and can increase to a clock rate of up to 4.70 gigahertz in turbo mode. The 2 performance cores are supported by 8 efficiency cores (codename "Gracemont"). These do not support hyperthreading and have a basic clock frequency of 1.20 gigahertz. The maximum turbo clock of 3.50 gigahertz is also slightly lower than that of the performance cores. Overall, the Intel Core i7-1255U has 10 processor cores and 12 threads.

The Intel Iris Xe Graphics 96 (Alder Lake) is used as the graphics unit. It was also released in the first quarter of 2022 and is also being manufactured with a structure width of 10 nanometers. The iGPU clocks at 0.35 gigahertz and can increase its clock rate to up to 1.25 gigahertz in turbo mode. The iGPU, which comes from the 13th generation of Intels integrated graphics units, has 96 execution units with a total of 768 shaders. With this you achieve a theoretical FP32 computing power (single precision) of 1916 GigaFLOPS.

The Intel Core i7-1255U officially supports the following memory types: DDR4-3200, DDR5-4800, LPDDR4X-4266, LPDDR5-5200. The processor has 2 memory channels with which it is able to be operated with up to 64 gigabytes of RAM. The maximum supported bandwidth of the RAM is 76.8 GB/s.

The Intel Core i7-1255U has 28 PCIs lines in version 4.0 for connecting dedicated graphics cards or other expansion cards.

Popular comparisons


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5.		Intel Core i7-1255U vs AMD Ryzen 7 5700U
6.		Intel Core i7-1255U vs Intel Core i7-12700H
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10.		Intel Core i5-12500H vs Intel Core i7-1255U

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