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Intel Core i5 8400 vs 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.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Measure performance when all cores are involved
Power Consumption
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 2400G and 8400
Advantages of Intel Core i5 8400
  • Has 5 MB larger L3 cache size
  • Supports up to 128 GB DDR4-2666 RAM
  • Has 2 physical cores more than the 2400G
  • 3% higher Turbo Boost frequency (4 GHz vs 3.9 GHz)
Advantages of AMD Ryzen 5 2400G
  • Unlocked multiplier
  • Around 2.11 GB/s (5%) higher theoretical memory bandwidth


Comparing the performance of CPUs in benchmarks
Cinebench R20 (Single-Core)
Cinebench R20 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)


Full technical specification of Intel Core i5 8400 and AMD Ryzen 5 2400G


Vendor Intel AMD
Released October 5, 2017 February 12, 2018
Launch price 182 USD 169 USD
Type Desktop Desktop
Codename Coffee Lake Zen
Model number i5-8400 -
Socket LGA-1151 AM4
Integrated GPU Intel UHD Graphics 630 Radeon RX Vega 11


Cores 6 4
Threads 6 8
Base Frequency 2.8 GHz 3.6 GHz
Turbo Boost Frequency 4 GHz 3.9 GHz
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


Transistors - 4.9 billions
Fabrication Process 14 nm 14 nm
TDP 65 W 65 W
Max. temperature 100°C 95°C

Memory support

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


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
Instruction Set SSE4.1, SSE4.2, AVX-2 -

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