Home > CPU Comparison > Core i5 8400 or Ryzen 5 2400G: what's better?

Intel Core i5 8400 vs AMD Ryzen 5 2400G

30 out of 100
Intel Core i5 8400
VS
27 out of 100
AMD Ryzen 5 2400G
Intel Core i5 8400
AMD Ryzen 5 2400G

We compared two desktop CPUs: the 2.8 GHz Intel Core i5 8400 with 6-cores against the 3.6 GHz AMD Ryzen 5 2400G 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
26.8
(Mediocre)

Key Differences

What are the key differences between 2400G and 8400
Advantages of Intel Core i5 8400
  • Has 5 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Supports up to 128 GB DDR4-2666 RAM
  • Has 2 more physical cores
  • 45% faster in a single-core Geekbench v6 test - 1414 vs 973 points
  • 3% higher Turbo Boost frequency (4 GHz vs 3.9 GHz)
Advantages of AMD Ryzen 5 2400G
  • More powerful Radeon RX Vega 11 integrated graphics: 1.8 vs 0.4 TFLOPS
  • Unlocked multiplier
  • Around 2.11 GB/s (5%) higher theoretical memory bandwidth
  • Newer - released 5 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i5 8400
vs
Ryzen 5 2400G

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 +45%
1414
Ryzen 5 2400G
973
Geekbench 6 (Multi-Core)
Core i5 8400 +43%
5082
Ryzen 5 2400G
3554
File compression 392.9 MB/sec 330.9 MB/sec
Clang compilation 36 Klines/sec 22.4 Klines/sec
HTML 5 Browser 115 pages/sec 88.5 pages/sec
PDF Renderer 156.8 Mpixels/sec 117.2 Mpixels/sec
Text processing 139 pages/sec 91.4 pages/sec
Background blur 33.8 images/sec 15.7 images/sec
Photo processing 49.9 images/sec 35.8 images/sec
Ray tracing 5.93 Mpixels/sec 6.26 Mpixels/sec
Sources: GeekBench [1], [2] – 1184 & 1099 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Core i5 8400 +10%
2366
Ryzen 5 2400G
2142
Passmark CPU (Multi-Core)
Core i5 8400 +6%
9232
Ryzen 5 2400G
8725
Integer math 25.6 GOps/sec 29.5 GOps/sec
Floating point math 22 GOps/sec 15.1 GOps/sec
Find prime numbers 37M Primes/sec 19M Primes/sec
Random string sorting 15.9M Strings/sec 14.3M Strings/sec
Data encryption 2.8 GBytes/sec 8 GBytes/sec
Data compression 129.6 MBytes/sec 123.5 MBytes/sec
Physics 634 Frames/sec 472 Frames/sec
Extended instructions 11.5B Matrices/sec 4.7B Matrices/sec
Sources: PassMark [3], [4] – 9637 & 4102 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i5 8400 +12%
77.38
Ryzen 5 2400G
69.05

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 4.8 PPW 4.2 PPW
Geekbench 6 Multi / Watt 78.2 PPW 54.7 PPW
Passmark CPU Mark / Watt 142 PPW 134.2 PPW
Blender / Watt 1.19 PPW 1.06 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 AMD Ryzen 5 2400G

General

Vendor Intel Amd
Released October 5, 2017 February 12, 2018
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Coffee Lake Zen (Raven Ridge)
Model number i5-8400 -
Integrated GPU UHD Graphics 630 Radeon RX Vega 11
Rival Equivalent - AMD Ryzen 5 2400G -
Successor - Intel Core Ultra 5 225 - AMD Ryzen 5 8600G
AMD Ryzen CPU ranking (#186th place)

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 3.9 GHz
Total
Total Cores 6 4
Total Threads 6 8
Bus Frequency 100 MHz 100 MHz
Multiplier 28x 36x
Bus Bandwidth 8 GT/s -
L1 Cache 64K (per core) 128K (per core)
L2 Cache 256K (per core) 512K (per core)
L3 Cache 9MB (shared) 4MB (shared)
Unlocked Multiplier No Yes

Package

Transistors - 4.9 billions
Fabrication Process 14 nm 14 nm
TDP (PL1) 65 W 65 W
Socket LGA-1151 AM4
Peak Temperature 100°C 95°C
Desktop CPU ranking (181st and 187th place)

iGPU

Integrated Graphics Intel UHD Graphics 630 Radeon RX Vega 11
GPU Base Clock 350 MHz 300 MHz
GPU Boost Clock 1050 MHz 1250 MHz
Shading Units 192 704
TMUs 24 44
ROPs 3 16
Execution Units 24 11
TGP 15 W 25 W
iGPU FLOPS
Core i5 8400
0.4 TFLOPS
Ryzen 5 2400G +350%
1.8 TFLOPS
More info: Radeon RX Vega 11 compared to UHD Graphics 630

Memory Support

Memory Types - DDR4-2666 - DDR4-2933
Max. Memory Size 128 GB 64 GB
Memory Channels 2 2
Max. Memory Bandwidth 41.6 GB/s 43.71 GB/s
ECC Support No Yes

Misc

Official Site Intel Core i5 8400 official page AMD Ryzen 5 2400G official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 12

Cast your vote

Choose between two processors
13 (44.8%)
16 (55.2%)
Total votes: 29

Comments

So which CPU will you choose: AMD Ryzen 5 2400G or Intel Core i5 8400?
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