Intel Celeron 3965Y vs Intel Core i5-8400H

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CPU comparison with benchmarks


Intel Celeron 3965Y CPU1 vs CPU2 Intel Core i5-8400H
Intel Celeron 3965Y Intel Core i5-8400H

CPU comparison

Intel Celeron 3965Y or Intel Core i5-8400H - 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 Celeron 3965Y has 2 cores with 2 threads and clocks with a maximum frequency of 1.50 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Celeron 3965Y was released in Q2/2017.

The Intel Core i5-8400H has 4 cores with 8 threads and clocks with a maximum frequency of 4.20 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Core i5-8400H was released in Q2/2018.
Intel Celeron (165) Family Intel Core i5 (328)
Intel Celeron 3000 (10) CPU group Intel Core i 8000H (6)
7 Generation 8
Kaby Lake U Architecture Coffee Lake H
Mobile Segment Mobile
-- Predecessor --
-- Successor Intel Core i5-9400H

CPU Cores and Base Frequency

The Intel Celeron 3965Y has 2 CPU cores and can calculate 2 threads in parallel. The clock frequency of the Intel Celeron 3965Y is 1.50 GHz while the Intel Core i5-8400H has 4 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the Intel Core i5-8400H is at 2.50 GHz (4.20 GHz).

Intel Celeron 3965Y Characteristic Intel Core i5-8400H
2 Cores 4
2 Threads 8
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
1.50 GHz Frequency 2.50 GHz
-- Turbo Frequency (1 Core) 4.20 GHz
-- Turbo Frequency (All Cores) 3.70 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 Celeron 3965Y Characteristic Intel Core i5-8400H
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Celeron 3965Y or Intel Core i5-8400H 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 HD Graphics 615 GPU Intel HD Graphics 630
0.30 GHz GPU frequency 0.30 GHz
0.85 GHz GPU (Turbo) 1.10 GHz
9.5 GPU Generation 9.5
14nm Technology 14 nm
3 Max. displays 3
24 Compute units 24
192 Shader 192
No Hardware Raytracing No
No Frame Generation No
16 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 615 GPU Intel HD 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 Celeron 3965Y can use up to 16 GB of memory in 2 memory channels. The maximum memory bandwidth is 29.8 GB/s. The Intel Core i5-8400H supports up to 64 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 42.7 GB/s.

Intel Celeron 3965Y Characteristic Intel Core i5-8400H
LPDDR3-1866, DDR3L-1600 Memory DDR4-2666
16 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
29.8 GB/s Max. Bandwidth 42.7 GB/s
No ECC No
-- L2 Cache --
2.00 MB L3 Cache 8.00 MB
3.0 PCIe version 3.0
10 PCIe lanes 16
9.9 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Celeron 3965Y is 6 W, while the Intel Core i5-8400H has a TDP of 45 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Celeron 3965Y Characteristic Intel Core i5-8400H
6 W TDP (PL1 / PBP) 45 W
-- TDP (PL2) --
-- TDP up --
4.5 W TDP down --
100 °C Tjunction max. --

Technical details

The Intel Celeron 3965Y is manufactured in 14 nm and has 2.00 MB cache. The Intel Core i5-8400H is manufactured in 14 nm and has a 8.00 MB cache.

Intel Celeron 3965Y Characteristic Intel Core i5-8400H
14 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 1515 Socket BGA 1440
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q2/2017 Release date Q2/2018
107 $ Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
372 (34%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
1081 (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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
708 (20%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
3534 (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 Celeron 3965Y Intel Celeron 3965Y
Intel HD Graphics 615 @ 0.85 GHz
326 (77%)
Intel Core i5-8400H Intel Core i5-8400H
Intel HD 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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
1182 (15%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
7902 (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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
0 (0%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
1296 (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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
0 (0%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
3826 (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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
0 (0%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 4.20 GHz
178 (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 Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
0 (0%)
Intel Core i5-8400H Intel Core i5-8400H
4C 8T @ 3.70 GHz
819 (100%)

Devices using this processor

Intel Celeron 3965Y Intel Core i5-8400H
Unknown Unknown

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