Intel Core i5-1240U vs Intel Atom Z3775

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CPU comparison with benchmarks


Intel Core i5-1240U CPU1 vs CPU2 Intel Atom Z3775
Intel Core i5-1240U Intel Atom Z3775

CPU comparison

In this CPU comparison, we compare the Intel Core i5-1240U and the Intel Atom Z3775 and use benchmarks to check which processor is faster.

We compare the Intel Core i5-1240U 10 core processor released in Q1/2022 with the Intel Atom Z3775 which has 4 CPU cores and was introduced in Q1/2014.
Intel Core i5 (331) Family Intel Atom (108)
Intel Core i 1200P/1200U (21) CPU group Intel Atom Z3700 (16)
12 Generation 4
Alder Lake U Architecture Bay Trail
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i5-1240U is a 10 core processor with a clock frequency of 1.10 GHz (4.40 GHz). The processor can compute 12 threads at the same time. The Intel Atom Z3775 clocks with 1.46 GHz (2.39 GHz), has 4 CPU cores and can calculate 4 threads in parallel.

Intel Core i5-1240U Characteristic Intel Atom Z3775
10 Cores 4
12 Threads 4
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
1.10 GHz (4.40 GHz)
2x Golden Cove
A-Core 1.46 GHz (2.39 GHz)
0.80 GHz (3.30 GHz)
8x Gracemont
B-Core --

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 i5-1240U Characteristic Intel Atom Z3775
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Intel Iris Xe Graphics 80 (Alder Lake) GPU Intel HD Graphics (Bay Trail GT1)
0.25 GHz GPU frequency 0.31 GHz
0.90 GHz GPU (Turbo) 0.78 GHz
13 GPU Generation 7
10 nm Technology 22 nm
4 Max. displays 2
80 Compute units 4
640 Shader 32
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 2 GB
12.1 DirectX Version 11.2

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 80 (Alder Lake) GPU Intel HD Graphics (Bay Trail GT1)
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 No
Decode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode

Memory & PCIe

Up to 64 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i5-1240U, while the Intel Atom Z3775 supports a maximum of 4 GB of memory with a maximum memory bandwidth of 17.1 GB/s enabled.

Intel Core i5-1240U Characteristic Intel Atom Z3775
LPDDR5-5200, LPDDR4X-4266, DDR5-4800, DDR4-3200 Memory LPDDR3-1066
64 GB Max. Memory 4 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
83.2 GB/s Max. Bandwidth 17.1 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 Intel Core i5-1240U has a TDP of 9 W. The TDP of the Intel Atom Z3775 is 3.5 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i5-1240U Characteristic Intel Atom Z3775
9 W TDP (PL1 / PBP) 3.5 W
29 W TDP (PL2) --
-- TDP up --
-- TDP down --
100 °C Tjunction max. 90 °C

Technical details

The Intel Core i5-1240U has 18.50 MB cache and is manufactured in 10 nm. The cache of Intel Atom Z3775 is at 2.00 MB. The processor is manufactured in 22 nm.

Intel Core i5-1240U Characteristic Intel Atom Z3775
10 nm Technology 22 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2
BGA 1744 Socket BGA 1380
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems
Q1/2022 Release date Q1/2014
-- Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Core i5-1240U (100%)
Intel Atom Z3775 (19%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Core i5-1240U (100%)
Intel Atom Z3775 (12%)

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 i5-1240U Intel Core i5-1240U
10C 12T @ 4.40 GHz
1227 (100%)
Intel Atom Z3775 Intel Atom Z3775
4C 4T @ 2.39 GHz
235 (19%)

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 i5-1240U Intel Core i5-1240U
10C 12T @ 2.30 GHz
5021 (100%)
Intel Atom Z3775 Intel Atom Z3775
4C 4T @ 1.46 GHz
803 (16%)

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 i5-1240U Intel Core i5-1240U
Intel Iris Xe Graphics 80 (Alder Lake) @ 0.90 GHz
1115 (100%)
Intel Atom Z3775 Intel Atom Z3775
Intel HD Graphics (Bay Trail GT1) @ 0.78 GHz
50 (4%)

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 i5-1240U Intel Core i5-1240U
10C 12T @ 2.30 GHz
8805 (100%)
Intel Atom Z3775 Intel Atom Z3775
4C 4T @ 1.46 GHz
703 (8%)

Devices using this processor

Intel Core i5-1240U Intel Atom Z3775
Unknown Unknown

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