Intel Atom x6425E vs Intel Core i5-6400

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CPU comparison with benchmarks


Intel Atom x6425E CPU1 vs CPU2 Intel Core i5-6400
Intel Atom x6425E Intel Core i5-6400

CPU comparison

Intel Atom x6425E or Intel Core i5-6400 - 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 x6425E has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to 32 GB of memory is supported in 4 memory channels. The Intel Atom x6425E was released in Q1/2021.

The Intel Core i5-6400 has 4 cores with 4 threads and clocks with a maximum frequency of 3.30 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Core i5-6400 was released in Q3/2015.
Intel Atom (101) Family Intel Core i5 (328)
Intel Atom x6000 (10) CPU group Intel Core i 6000 (24)
6 Generation 6
Elkhart Lake Architecture Skylake S
Mobile Segment Desktop / Server
-- Predecessor --
Intel Atom x7425E Successor Intel Core i5-7400

CPU Cores and Base Frequency

The Intel Atom x6425E is a 4 core processor with a clock frequency of 2.00 GHz (3.00 GHz). The Intel Core i5-6400 has 4 CPU cores with a clock frequency of 2.70 GHz (3.30 GHz).

Intel Atom x6425E Characteristic Intel Core i5-6400
4 Cores 4
4 Threads 4
normal Core architecture normal
No Hyperthreading No
No Overclocking ? No
2.00 GHz Frequency 2.70 GHz
3.00 GHz Turbo Frequency (1 Core) 3.30 GHz
2.70 GHz Turbo Frequency (All Cores) 3.00 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.

Intel Atom x6425E Characteristic Intel Core i5-6400
-- AI hardware --
-- AI specifications --

Internal Graphics

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 UHD Graphics 10th Gen (32 EU) GPU Intel HD Graphics 530
0.50 GHz GPU frequency 0.35 GHz
0.75 GHz GPU (Turbo) 1.15 GHz
11 GPU Generation 9
14 nm Technology 14 nm
3 Max. displays 3
32 Compute units 24
256 Shader 192
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 32 GB
12 DirectX Version 12

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 UHD Graphics 10th Gen (32 EU) GPU Intel HD Graphics 530
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode
Decode / Encode Codec VP8 Decode / Encode
Decode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Atom x6425E supports a maximum of 32 GB of memory in 4 memory channels. The Intel Core i5-6400 can connect up to 64 GB of memory in 2 memory channels.

Intel Atom x6425E Characteristic Intel Core i5-6400
LPDDR4X-3733, DDR4-3200 Memory DDR4-2133, DDR3-1600
32 GB Max. Memory 64 GB
4 (Quad Channel) Memory channels 2 (Dual Channel)
59.7 GB/s Max. Bandwidth 34.1 GB/s
Yes ECC No
1.50 MB L2 Cache --
-- L3 Cache 6.00 MB
3.0 PCIe version 3.0
8 PCIe lanes 16
7.9 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom x6425E has a TDP of 12 W, that of the Intel Core i5-6400 is 65 W.

Intel Atom x6425E Characteristic Intel Core i5-6400
12 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. --

Technical details

The Intel Atom x6425E has a 1.50 MB cache, while the Intel Core i5-6400 cache has a total of 6.00 MB.

Intel Atom x6425E Characteristic Intel Core i5-6400
10 nm Technology 14 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 1493 Socket LGA 1151
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Operating systems Windows 10, Linux
Q1/2021 Release date Q3/2015
56 $ Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks

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 x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
676 (80%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.30 GHz
841 (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 x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
2055 (76%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
2706 (100%)

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 Atom x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
539 (48%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.30 GHz
1134 (100%)

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 Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
1434 (46%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
3086 (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 x6425E Intel Atom x6425E
Intel UHD Graphics 10th Gen (32 EU) @ 0.75 GHz
400 (91%)
Intel Core i5-6400 Intel Core i5-6400
Intel HD Graphics 530 @ 1.15 GHz
442 (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 x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
3885 (75%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
5177 (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 Atom x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
114 (81%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.30 GHz
140 (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.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
335 (67%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
497 (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.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
0 (0%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.30 GHz
275 (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.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
0 (0%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
1061 (100%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
0 (0%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
730 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
0 (0%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 3.00 GHz
359 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.00 GHz
0 (0%)
Intel Core i5-6400 Intel Core i5-6400
4C 4T @ 2.70 GHz
1360 (100%)

Devices using this processor

Intel Atom x6425E Intel Core i5-6400
Unknown Unknown

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