Intel Core i5-8400H vs Intel Core i5-9400H

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CPU comparison with benchmarks


Intel Core i5-8400H CPU1 vs CPU2 Intel Core i5-9400H
Intel Core i5-8400H Intel Core i5-9400H

CPU comparison

Intel Core i5-8400H or Intel Core i5-9400H - 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 i5-8400H has 4 cores with 8 threads and clocks with a maximum frequency of 4.20 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i5-8400H was released in Q2/2018.

The Intel Core i5-9400H has 4 cores with 8 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i5-9400H was released in Q2/2019.
Intel Core i5 (328) Family Intel Core i5 (328)
Intel Core i 8000H (6) CPU group Intel Core i 9000H (11)
8 Generation 9
Coffee Lake H Architecture Coffee Lake H Refresh
Mobile Segment Mobile
-- Predecessor Intel Core i5-8400H
Intel Core i5-9400H Successor --

CPU Cores and Base Frequency

The Intel Core i5-8400H is a 4 core processor with a clock frequency of 2.50 GHz (4.20 GHz). The Intel Core i5-9400H has 4 CPU cores with a clock frequency of 2.50 GHz (4.30 GHz).

Intel Core i5-8400H Characteristic Intel Core i5-9400H
4 Cores 4
8 Threads 8
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
2.50 GHz Frequency 2.50 GHz
4.20 GHz Turbo Frequency (1 Core) 4.30 GHz
3.70 GHz Turbo Frequency (All Cores) --

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 i5-8400H Characteristic Intel Core i5-9400H
-- 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 HD Graphics 630 GPU Intel UHD Graphics 630
0.30 GHz GPU frequency 0.35 GHz
1.10 GHz GPU (Turbo) 1.10 GHz
9.5 GPU Generation 9.5
14 nm Technology 14 nm
3 Max. displays 3
24 Compute units 24
192 Shader 192
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 64 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 HD Graphics 630 GPU Intel UHD Graphics 630
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 / Encode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i5-8400H supports a maximum of 64 GB of memory in 2 memory channels. The Intel Core i5-9400H can connect up to 128 GB of memory in 2 memory channels.

Intel Core i5-8400H Characteristic Intel Core i5-9400H
DDR4-2666 Memory LPDDR3-2133, DDR4-2666
64 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
42.7 GB/s Max. Bandwidth 42.7 GB/s
No ECC No
-- L2 Cache --
8.00 MB L3 Cache 8.00 MB
3.0 PCIe version 3.0
16 PCIe lanes 16
15.8 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 Core i5-8400H has a TDP of 45 W, that of the Intel Core i5-9400H is 45 W.

Intel Core i5-8400H Characteristic Intel Core i5-9400H
45 W TDP (PL1 / PBP) 45 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 35 W
-- Tjunction max. 100 °C

Technical details

The Intel Core i5-8400H has a 8.00 MB cache, while the Intel Core i5-9400H cache has a total of 8.00 MB.

Intel Core i5-8400H Characteristic Intel Core i5-9400H
14 nm Technology 14 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, AVX2
BGA 1440 Socket BGA 1440
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q2/2018 Release date Q2/2019
-- Release price 250 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 2 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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
1081 (97%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 4.30 GHz
1119 (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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
3534 (91%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 2.50 GHz
3897 (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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
1296 (97%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 4.30 GHz
1341 (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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
3826 (91%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 2.50 GHz
4225 (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 Core i5-8400H Intel Core i5-8400H
Intel HD Graphics 630 @ 1.10 GHz
422 (100%)
Intel Core i5-9400H Intel Core i5-9400H
Intel UHD Graphics 630 @ 1.10 GHz
422 (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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
7902 (97%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 2.50 GHz
8120 (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 Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
819 (98%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 2.50 GHz
834 (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 i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
178 (100%)
Intel Core i5-9400H Intel Core i5-9400H
4C 8T @ 4.30 GHz
0 (0%)

Devices using this processor

Intel Core i5-8400H Intel Core i5-9400H
Unknown Unknown

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