Intel Core i7-1255U vs Qualcomm Snapdragon 778G

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CPU comparison with benchmarks


Intel Core i7-1255U CPU1 vs CPU2 Qualcomm Snapdragon 778G
Intel Core i7-1255U Qualcomm Snapdragon 778G

CPU comparison

Intel Core i7-1255U or Qualcomm Snapdragon 778G - 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 Intel Core i7-1255U has 10 cores with 12 threads and clocks with a maximum frequency of 4.70 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-1255U was released in Q1/2022.

The Qualcomm Snapdragon 778G has 8 cores with 8 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Qualcomm Snapdragon 778G was released in Q2/2021.
Intel Core i7 (298) Family Qualcomm Snapdragon (102)
Intel Core i 1200P/1200U (21) CPU group Qualcomm Snapdragon 778 (2)
12 Generation 4
Alder Lake U Architecture Kryo 670
Mobile Segment Mobile
-- Predecessor --
Intel Core i7-1355U Successor --

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) while the Qualcomm Snapdragon 778G has 8 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the Qualcomm Snapdragon 778G is at 2.40 GHz.

Intel Core i7-1255U Characteristic Qualcomm Snapdragon 778G
10 Cores 8
12 Threads 8
hybrid (big.LITTLE) Core architecture hybrid (Prime / big.LITTLE)
Yes Hyperthreading No
No Overclocking ? No
1.70 GHz (4.70 GHz)
2x Golden Cove
A-Core 2.40 GHz
1x Kryo 670 Prime
1.20 GHz (3.50 GHz)
8x Gracemont
B-Core 2.20 GHz
3x Kryo 670 Gold
-- C-Core 1.90 GHz
4x Kryo 670 Silver

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.

Intel Core i7-1255U Characteristic Qualcomm Snapdragon 778G
-- AI hardware Qualcomm AI engine
-- AI specifications Hexagon 770 @ 12 TOPS

Internal Graphics

The Intel Core i7-1255U or Qualcomm Snapdragon 778G has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Intel Iris Xe Graphics 96 (Alder Lake) GPU Qualcomm Adreno 642L
0.35 GHz GPU frequency --
1.25 GHz GPU (Turbo) --
13 GPU Generation 5
10 nm Technology 6 nm
4 Max. displays 1
96 Compute units 4
768 Shader 384
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 4 GB
12.1 DirectX Version 12.0

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.

Intel Iris Xe Graphics 96 (Alder Lake) GPU Qualcomm Adreno 642L
Decode / Encode Codec h265 / HEVC (8 bit) Decode
Decode / Encode Codec h265 / HEVC (10 bit) Decode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode
Decode Codec VP8 Decode
Decode Codec AV1 No
Decode / Encode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i7-1255U can use up to 64 GB of memory in 2 memory channels. The maximum memory bandwidth is 83.2 GB/s. The Qualcomm Snapdragon 778G supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 51.2 GB/s.

Intel Core i7-1255U Characteristic Qualcomm Snapdragon 778G
LPDDR5-5200, LPDDR4X-4266, DDR5-4800, DDR4-3200 Memory LPDDR5-6400
64 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
83.2 GB/s Max. Bandwidth 51.2 GB/s
No ECC No
6.50 MB L2 Cache --
12.00 MB L3 Cache 2.00 MB
4.0 PCIe version --
28 PCIe lanes --
55.1 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Intel Core i7-1255U is 15 W, while the Qualcomm Snapdragon 778G has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i7-1255U Characteristic Qualcomm Snapdragon 778G
15 W TDP (PL1 / PBP) --
55 W TDP (PL2) --
-- TDP up --
-- TDP down --
100 °C Tjunction max. --

Technical details

The Intel Core i7-1255U is manufactured in 10 nm and has 18.50 MB cache. The Qualcomm Snapdragon 778G is manufactured in 6 nm and has a 2.00 MB cache.

Intel Core i7-1255U Characteristic Qualcomm Snapdragon 778G
10 nm Technology 6 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions --
BGA 1744 Socket --
VT-x, VT-x EPT, VT-d Virtualization None
Yes AES-NI No
Windows 10, Windows 11, Linux Operating systems Android
Q1/2022 Release date Q2/2021
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core i7-1255U to help other visitors make their purchasing decisions. The average rating is 4.0 stars (21 ratings). Rate now:
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i7-1255U (100%)
Qualcomm Snapdragon 778G (49%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core i7-1255U (100%)
Qualcomm Snapdragon 778G (42%)

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.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
1603 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
782 (49%)

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.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
7612 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
2842 (37%)

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 Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
2136 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
1027 (48%)

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 i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
6908 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
2907 (42%)

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 Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
13905 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
6398 (46%)

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 i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
1761 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

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.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
7545 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

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 i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
649 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

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.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
3009 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

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 i7-1255U Intel Core i7-1255U
Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz
1916 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
Qualcomm Adreno 642L @ 0.00 GHz
0 (0%)

AnTuTu 10 Benchmark

The AnTuTu 10 benchmark is one of the best-known benchmarks for mobile processors, which is now available in version 10. There is a version for Android-based smartphones and tablets, as well as a version for Apple mobile devices, i.e. iPhones and iPads.

The Antutu 10 benchmark has 3 phases. In the first phase, the device's RAM is tested, in phase 2 the graphics are tested and in the final phase the entire device is pushed to its performance limits by rendering 3D graphics.

Antutu 10 is therefore ideal for comparing the performance of different devices.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 1.70 GHz
0 (0%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
596849 (100%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 1.70 GHz
0 (0%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
502035 (100%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 1.70 GHz
0 (0%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
523068 (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.
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 4.70 GHz
245 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

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 i7-1255U Intel Core i7-1255U
10C 12T @ 2.70 GHz
1498 (100%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
0 (0%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

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. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Intel Core i7-1255U Intel Core i7-1255U
10C 12T @ 1.70 GHz
0 (0%)
Qualcomm Snapdragon 778G Qualcomm Snapdragon 778G
8C 8T @ 2.40 GHz
12 (100%)

Devices using this processor

Intel Core i7-1255U Qualcomm Snapdragon 778G
Unknown Samsung Galaxy A73 5G
Xiaomi Civi S1
Oppo Reno7 5G

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