Intel Core i5-2400S vs Intel Core i5-8400T

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CPU comparison with benchmarks


Intel Core i5-2400S CPU1 vs CPU2 Intel Core i5-8400T
Intel Core i5-2400S Intel Core i5-8400T

CPU comparison

In this CPU comparison, we compare the Intel Core i5-2400S and the Intel Core i5-8400T and use benchmarks to check which processor is faster.

We compare the Intel Core i5-2400S 4 core processor released in Q1/2011 with the Intel Core i5-8400T which has 6 CPU cores and was introduced in Q2/2018.
Intel Core i5 (331) Family Intel Core i5 (331)
Intel Core i 2000 (28) CPU group Intel Core i 8000 (20)
2 Generation 8
Sandy Bridge S Architecture Coffee Lake S
Desktop / Server Segment Desktop / Server
-- Predecessor Intel Core i5-7400T
-- Successor Intel Core i5-9400T

CPU Cores and Base Frequency

The Intel Core i5-2400S is a 4 core processor with a clock frequency of 2.50 GHz (3.30 GHz). The processor can compute 4 threads at the same time. The Intel Core i5-8400T clocks with 1.70 GHz (3.30 GHz), has 6 CPU cores and can calculate 6 threads in parallel.

Intel Core i5-2400S Characteristic Intel Core i5-8400T
4 Cores 6
4 Threads 6
normal Core architecture normal
No Hyperthreading No
No Overclocking ? Yes
2.50 GHz Frequency 1.70 GHz
3.30 GHz Turbo Frequency (1 Core) 3.30 GHz
-- Turbo Frequency (All Cores) 2.80 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 Core i5-2400S Characteristic Intel Core i5-8400T
-- 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 HD Graphics 2000 GPU Intel UHD Graphics 630
0.85 GHz GPU frequency 0.35 GHz
1.10 GHz GPU (Turbo) 1.15 GHz
6 GPU Generation 9.5
32 nm Technology 14 nm
2 Max. displays 3
6 Compute units 24
48 Shader 192
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory 64 GB
10.1 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 2000 GPU Intel UHD Graphics 630
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

Up to 32 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i5-2400S, while the Intel Core i5-8400T supports a maximum of 128 GB of memory with a maximum memory bandwidth of 42.7 GB/s enabled.

Intel Core i5-2400S Characteristic Intel Core i5-8400T
DDR3-1333 Memory DDR4-2666
32 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 42.7 GB/s
No ECC No
-- L2 Cache --
6.00 MB L3 Cache 9.00 MB
2.0 PCIe version 3.0
16 PCIe lanes 16
8.0 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The Intel Core i5-2400S has a TDP of 65 W. The TDP of the Intel Core i5-8400T is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i5-2400S Characteristic Intel Core i5-8400T
65 W TDP (PL1 / PBP) 95 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core i5-2400S has 6.00 MB cache and is manufactured in 32 nm. The cache of Intel Core i5-8400T is at 9.00 MB. The processor is manufactured in 14 nm.

Intel Core i5-2400S Characteristic Intel Core i5-8400T
32 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX ISA extensions SSE4.1, SSE4.2, AVX2
LGA 1155 Socket LGA 1151-2
VT-x, VT-x EPT Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2011 Release date Q2/2018
-- Release price 260 $
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i5-2400S (66%)
Intel Core i5-8400T (100%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Core i5-2400S (48%)
Intel Core i5-8400T (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 Core i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
676 (79%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
858 (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 i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
1966 (55%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 2.80 GHz
3607 (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 i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
578 (53%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
1092 (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 i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
1618 (42%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 2.80 GHz
3816 (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 i5-2400S Intel Core i5-2400S
Intel HD Graphics 2000 @ 1.10 GHz
106 (24%)
Intel Core i5-8400T Intel Core i5-8400T
Intel UHD Graphics 630 @ 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 Core i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
3155 (42%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 2.80 GHz
7503 (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 Core i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
1000 (51%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 1.70 GHz
1963 (100%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
0 (0%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
49 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
0 (0%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
272 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 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 i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
601 (100%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
0 (0%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 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 i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
1965 (100%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 2.80 GHz
0 (0%)

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 i5-2400S Intel Core i5-2400S
4C 4T @ 3.30 GHz
0 (0%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 3.30 GHz
139 (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 i5-2400S Intel Core i5-2400S
4C 4T @ 2.50 GHz
0 (0%)
Intel Core i5-8400T Intel Core i5-8400T
6C 6T @ 2.80 GHz
696 (100%)

Devices using this processor

Intel Core i5-2400S Intel Core i5-8400T
Unknown Unknown

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