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Qualcomm Snapdragon 8cx Gen 3 vs Intel Core i7-1255U

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CPU comparison with benchmarks


Qualcomm Snapdragon 8cx Gen 3 CPU1 vs CPU2 Intel Core i7-1255U
Qualcomm Snapdragon 8cx Gen 3 Intel Core i7-1255U

CPU comparison

Qualcomm Snapdragon 8cx Gen 3 or Intel Core i7-1255U - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Qualcomm Snapdragon 8cx Gen 3 has 8 cores with 8 threads and clocks with a maximum frequency of 3.00 GHz. Up to 32 GB of memory is supported in 8 memory channels. The Qualcomm Snapdragon 8cx Gen 3 was released in Q1/2022.

The Intel Core i7-1255U has 10 cores with 12 threads and clocks with a maximum frequency of 4.70 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Core i7-1255U was released in Q1/2022.
Qualcomm Snapdragon (104) Family Intel Core i7 (299)
Qualcomm Snapdragon 8cx Gen 3 (1) CPU group Intel Core i 1200P/1200U (21)
3 Generation 12
Cortex-X1 / Cortex-A78 Architecture Alder Lake U
Smartphone / Tablet Segment Notebook
Qualcomm Snapdragon 8cx Gen. 2 Predecessor --
-- Successor Intel Core i7-1355U

CPU Cores and Base Frequency

The Qualcomm Snapdragon 8cx Gen 3 is a 8 core processor with a clock frequency of 3.00 GHz. The Intel Core i7-1255U has 10 CPU cores with a clock frequency of 1.70 GHz (4.70 GHz).
Qualcomm Snapdragon 8cx Gen 3 Characteristic Intel Core i7-1255U
8 Cores 10
8 Threads 12
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
No Hyperthreading Yes
No Overclocking ? No
3.00 GHz
4x Kryo 680 Prime		 A-Core 1.70 GHz (4.70 GHz)
2x Golden Cove
2.42 GHz
4x Kryo 680 Gold		 B-Core 1.20 GHz (3.50 GHz)
8x Gracemont

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.
Qualcomm Snapdragon 8cx Gen 3 Characteristic Intel Core i7-1255U
Qualcomm AI engine AI hardware --
Hexagon AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
Qualcomm Adreno 690 GPU Intel Iris Xe Graphics 96 (Alder Lake)
GPU frequency 0.35 GHz
-- GPU (Turbo) 1.25 GHz
6 GPU Generation 13
7 nm Technology 10 nm
0 Max. displays 4
-- Compute units 96
-- Shader 768
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 32 GB
12.0 DirectX Version 12.1

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.
Qualcomm Adreno 690 GPU Intel Iris Xe Graphics 96 (Alder Lake)
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode
No Codec AV1 Decode
Decode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Qualcomm Snapdragon 8cx Gen 3 supports a maximum of 32 GB of memory in 8 memory channels. The Intel Core i7-1255U can connect up to 64 GB of memory in 2 memory channels.
Qualcomm Snapdragon 8cx Gen 3 Characteristic Intel Core i7-1255U
LPDDR4X-4266 Memory LPDDR5-5200, LPDDR4X-4266, DDR5-4800, DDR4-3200
32 GB Max. Memory 64 GB
8 (Octa Channel) Memory channels 2 (Dual Channel)
68.2 GB/s Max. Bandwidth 83.2 GB/s
No ECC No
-- L2 Cache 6.50 MB
-- L3 Cache 12.00 MB
-- PCIe version 4.0
-- PCIe lanes 28
-- PCIe Bandwidth 55.1 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Qualcomm Snapdragon 8cx Gen 3 has a TDP of 7 W, that of the Intel Core i7-1255U is 15 W.
Qualcomm Snapdragon 8cx Gen 3 Characteristic Intel Core i7-1255U
7 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) 55 W
-- TDP up --
-- TDP down --
-- Tjunction max. 100 °C

Technical details

The Qualcomm Snapdragon 8cx Gen 3 has a 0.00 MB cache, while the Intel Core i7-1255U cache has a total of 18.50 MB.
Qualcomm Snapdragon 8cx Gen 3 Characteristic Intel Core i7-1255U
5 nm Technology 10 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4.1, SSE4.2, AVX2
-- Socket BGA 1744
None Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Android, Windows 10 (ARM) Operating systems Windows 10, Windows 11, Linux
Q1/2022 Release date Q1/2022
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Qualcomm Snapdragon 8cx Gen 3 to help other visitors make their purchasing decisions. The average rating is 3.5 stars (19 ratings). Rate now:
Here you can rate the Intel Core i7-1255U to help other visitors make their purchasing decisions. The average rating is 3.9 stars (45 ratings). Rate now:

Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 8cx Gen 3 (51%)
Intel Core i7-1255U (100%)
⌀ Multi core performance in 2 CPU benchmarks
Qualcomm Snapdragon 8cx Gen 3 (60%)
Intel Core i7-1255U (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
579 (33%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
1761 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
3286 (44%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
7545 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
1096 (68%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
1603 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
5789 (76%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
7612 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
2136 (100%)

Geekbench 6 (Multi-Core)

The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
6908 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
649 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
3009 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
Qualcomm Adreno 690 @ 0.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz
1916 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
13905 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
245 (100%)

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.
Qualcomm Snapdragon 8cx Gen 3 Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz
0 (0%)
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
1498 (100%)

Devices using this processor
Qualcomm Snapdragon 8cx Gen 3 Intel Core i7-1255U
Unknown Unknown

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