Intel Atom Z3745 vs Intel Core i3-4120U

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CPU comparison with benchmarks


Intel Atom Z3745 CPU1 vs CPU2 Intel Core i3-4120U
Intel Atom Z3745 Intel Core i3-4120U

CPU comparison

Intel Atom Z3745 or Intel Core i3-4120U - 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 Atom Z3745 has 4 cores with 4 threads and clocks with a maximum frequency of 1.86 GHz. Up to 4 GB of memory is supported in 2 memory channels. The Intel Atom Z3745 was released in Q1/2014.

The Intel Core i3-4120U has 2 cores with 4 threads and clocks with a maximum frequency of 2.00 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core i3-4120U was released in Q2/2014.
Intel Atom (108) Family Intel Core i3 (205)
Intel Atom Z3700 (16) CPU group Intel Core i 4000U (26)
4 Generation 4
Bay Trail Architecture Haswell U
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom Z3745 is a 4 core processor with a clock frequency of 1.33 GHz (1.86 GHz). The Intel Core i3-4120U has 2 CPU cores with a clock frequency of 2.00 GHz.
Intel Atom Z3745 Characteristic Intel Core i3-4120U
4 Cores 2
4 Threads 4
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
1.33 GHz Frequency 2.00 GHz
1.86 GHz Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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.
Intel Atom Z3745 Characteristic Intel Core i3-4120U
-- AI hardware --
-- 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.
Intel HD Graphics (Bay Trail GT1) GPU Intel HD Graphics 4400
0.31 GHz GPU frequency 0.20 GHz
0.78 GHz GPU (Turbo) 1.00 GHz
7 GPU Generation 7.5
22 nm Technology 22 nm
2 Max. displays 3
4 Compute units 20
32 Shader 160
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory 2 GB
11.2 DirectX Version 11.1

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.
Intel HD Graphics (Bay Trail GT1) GPU Intel HD Graphics 4400
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode Codec JPEG Decode

Memory & PCIe

The Intel Atom Z3745 supports a maximum of 4 GB of memory in 2 memory channels. The Intel Core i3-4120U can connect up to 16 GB of memory in 2 memory channels.
Intel Atom Z3745 Characteristic Intel Core i3-4120U
LPDDR3-1066 Memory LPDDR3-1600, DDR3-1600
4 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
17.1 GB/s Max. Bandwidth 25.6 GB/s
No ECC No
-- L2 Cache --
2.00 MB L3 Cache 3.00 MB
-- PCIe version 2.0
-- PCIe lanes 12
-- PCIe Bandwidth 6.0 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom Z3745 has a TDP of 4 W, that of the Intel Core i3-4120U is 15 W.
Intel Atom Z3745 Characteristic Intel Core i3-4120U
4 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
90 °C Tjunction max. 100 °C

Technical details

The Intel Atom Z3745 has a 2.00 MB cache, while the Intel Core i3-4120U cache has a total of 3.00 MB.
Intel Atom Z3745 Characteristic Intel Core i3-4120U
22 nm Technology 22 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2, AVX2
BGA 1380 Socket BGA 1168
VT-x, VT-x EPT Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Operating systems Windows 10, Linux
Q1/2014 Release date Q2/2014
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Atom Z3745 to help other visitors make their purchasing decisions. The average rating is 3.0 stars (2 ratings). Rate now:
Here you can rate the Intel Core i3-4120U to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Atom Z3745 (39%)
Intel Core i3-4120U (100%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Atom Z3745 (44%)
Intel Core i3-4120U (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.
Intel Atom Z3745 Intel Atom Z3745
4C 4T @ 1.86 GHz
182 (39%)
Intel Core i3-4120U Intel Core i3-4120U
2C 4T @ 2.00 GHz
462 (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.
Intel Atom Z3745 Intel Atom Z3745
4C 4T @ 1.33 GHz
598 (56%)
Intel Core i3-4120U Intel Core i3-4120U
2C 4T @ 2.00 GHz
1071 (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.
Intel Atom Z3745 Intel Atom Z3745
Intel HD Graphics (Bay Trail GT1) @ 0.78 GHz
50 (16%)
Intel Core i3-4120U Intel Core i3-4120U
Intel HD Graphics 4400 @ 1.00 GHz
320 (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.
Intel Atom Z3745 Intel Atom Z3745
4C 4T @ 1.33 GHz
621 (32%)
Intel Core i3-4120U Intel Core i3-4120U
2C 4T @ 2.00 GHz
1965 (100%)

Devices using this processor
Intel Atom Z3745 Intel Core i3-4120U
Unknown Unknown

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