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Processors/Comparison

10 specifications

Intel Core i5-8400 vs AMD Ryzen 5 5500

On paper, the AMD Ryzen 5 5500 boosts higher, and the AMD Ryzen 5 5500 carries more L3 cache. Specifications describe what each chip is designed to do; how much of that either one holds under continuous load is a separate question.

Intel Core i5-8400 compared with AMD Ryzen 5 5500, specification by specification
10 specifications · 4 with a higher side

Intel Core i5-8400

Intel · Coffee Lake (8th gen) · Desktop

AMD Ryzen 5 5500

AMD · Ryzen 5000 (Cezanne, Zen 3) · Desktop

Cores and clocks

Cores
6
6
Threads
6
12 (higher on this specification)
Base clock
2.8 GHz
3.6 GHz (higher on this specification)
Boost clock
4.0 GHz
4.2 GHz (higher on this specification)

Cache and power

L3 cache
9 MB
16 MB (higher on this specification)
TDP
65 W
65 W

Platform

Socket
FCLGA1151
AM4
Process
14 nm
7 nm
Integrated graphics
Intel UHD Graphics 630
None
Launched
2017-10-05
2022-04-04

A check marks the higher figure only on rows where higher is unambiguously better. Rows without one are not ties; they are specifications where “better” has no meaning.

Every figure on this table is a design target. None of it is a measurement.

Nothing above describes how a processor behaves twenty minutes into a sustained workload, which is where two chips with nearly identical specifications routinely diverge. A boost clock is a ceiling the vendor permits, not a rate the chip sustains, and whether it holds depends on the cooling, the case, the power profile and the room. None of those appear on a specification sheet.

We deliberately do not reduce these figures to a single score. A composite invented from specifications would look authoritative and measure nothing, and choosing the weights would be choosing the winner.