Home > CPU Comparison > Core i5 8400 or Core i3 10100: what's better?

Intel Core i5 8400 vs i3 10100

30 out of 100
Intel Core i5 8400
VS
32 out of 100
Intel Core i3 10100
Intel Core i5 8400
Intel Core i3 10100

We compared two desktop CPUs: the 2.8 GHz Intel Core i5 8400 with 6-cores against the 3.6 GHz i3 10100 with 4-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
NanoReview Final Score
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Value for money (Beta)

Global average CPU prices are used by default! For better accuracy, enter your current prices and click “Calculate".
Currency
VS
60.0
(Average)
Value Index
27.3
(Mediocre)

Key Differences

What are the key differences between 10100 and 8400
Advantages of Intel Core i5 8400
  • Has 2 more physical cores
  • Has 3 MB larger L3 cache size
Advantages of Intel Core i3 10100
  • Newer - released 2 years and 7 months later
  • 7% higher Turbo Boost frequency (4.3 GHz vs 4 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i5 8400
vs
Core i3 10100

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Core i5 8400
1414
Core i3 10100 +4%
1475
Geekbench 6 (Multi-Core)
Core i5 8400 +9%
5082
Core i3 10100
4669
File compression 392.9 MB/sec 304.7 MB/sec
Clang compilation 36 Klines/sec 32.3 Klines/sec
HTML 5 Browser 115 pages/sec 116.4 pages/sec
PDF Renderer 156.8 Mpixels/sec 156.4 Mpixels/sec
Text processing 139 pages/sec 110.6 pages/sec
Background blur 33.8 images/sec 27.3 images/sec
Photo processing 49.9 images/sec 45.5 images/sec
Ray tracing 5.93 Mpixels/sec 6.62 Mpixels/sec
Sources: GeekBench [1], [2] – 1184 & 965 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Core i5 8400
2366
Core i3 10100 +9%
2586
Passmark CPU (Multi-Core)
Core i5 8400 +9%
9232
Core i3 10100
8480
Integer math 25.6 GOps/sec 28.4 GOps/sec
Floating point math 22 GOps/sec 17.8 GOps/sec
Find prime numbers 37M Primes/sec 22M Primes/sec
Random string sorting 15.9M Strings/sec 16M Strings/sec
Data encryption 2.8 GBytes/sec 2.8 GBytes/sec
Data compression 129.6 MBytes/sec 127.5 MBytes/sec
Physics 634 Frames/sec 508 Frames/sec
Extended instructions 11.5B Matrices/sec 8.6B Matrices/sec
Sources: PassMark [3], [4] – 9637 & 2446 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i5 8400
77.38
Core i3 10100 +1%
78.37

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 4.8 PPW 4.6 PPW
Geekbench 6 Multi / Watt 78.2 PPW 71.8 PPW
Passmark CPU Mark / Watt 142 PPW 130.5 PPW
Blender / Watt 1.19 PPW 1.21 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Specifications

Full technical specification of Intel Core i5 8400 and i3 10100

General

Vendor Intel Intel
Released October 5, 2017 May 1, 2020
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Coffee Lake Comet Lake
Model number i5-8400 i3-10100
Integrated GPU UHD Graphics 630 UHD Graphics 630
Rival Equivalent - AMD Ryzen 5 2400G - AMD Ryzen 3 3100
Successor - Intel Core Ultra 5 225 - Intel Core i3 14100

CPU

Performance Cores
P-Cores 6 4
P-Threads 6 8
Base Frequency (P) 2.8 GHz 3.6 GHz
Turbo Boost Frequency (P) 4 GHz 4.3 GHz
Total
Total Cores 6 4
Total Threads 6 8
Bus Frequency 100 MHz 100 MHz
Multiplier 28x 36x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 256K (per core)
L3 Cache 9MB (shared) 6MB (shared)
Unlocked Multiplier No No

Package

Fabrication Process 14 nm 14 nm
TDP (PL1) 65 W 65 W
Socket LGA-1151 LGA-1200
Peak Temperature 100°C 100°C
Desktop CPU ranking (181st and 173rd place)

iGPU

Integrated Graphics Intel UHD Graphics 630 Intel UHD Graphics 630
GPU Base Clock 350 MHz 350 MHz
GPU Boost Clock 1050 MHz 1100 MHz
Shading Units 192 192
TMUs 24 24
ROPs 3 3
Execution Units 24 24
TGP 15 W 15 W
iGPU FLOPS
Core i5 8400
0.4 TFLOPS
Core i3 10100
0.4 TFLOPS
See: Intel UHD Graphics 630 benchmarks

Memory Support

Memory Types - DDR4-2666 - DDR4-2666
Max. Memory Size 128 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 41.6 GB/s 41.6 GB/s
ECC Support No No

Misc

Official Site Intel Core i5 8400 official page Intel Core i3 10100 official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 16

Cast your vote

Choose between two processors
36 (27.3%)
96 (72.7%)
Total votes: 132

Comments

So which CPU will you choose: Intel Core i3 10100 or i5 8400?
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