Intel Core i5-12400 vs AMD Ryzen 9 5900X

The AMD Ryzen 9 5900X is the faster chip for gaming by roughly 3%. Here is the full spec-by-spec breakdown.

AMD Ryzen 9 5900X wins — about 3% faster for gaming
Specification Intel Core i5-12400 AMD Ryzen 9 5900X
Gaming score 71/100 73/100
Tier B B
Manufacturer Intel AMD
Cores 6 12
Threads 12 24
Base clock 2.5 GHz 3.7 GHz
Boost clock 4.4 GHz 4.8 GHz
Power draw (TDP) 65 W 105 W
Release year 2022 2020

Which should you buy?

For gaming specifically, the AMD Ryzen 9 5900X is the better buy — it holds a 3% lead in our index, which shows up most at 1080p and in CPU-bound titles like strategy and simulation games. The AMD Ryzen 9 5900X has more cores (12 vs 6), which helps if you stream, compile or render alongside playing. The Intel Core i5-12400 runs 40W cooler, meaning a cheaper cooler and less case heat. Either way, pair it with a graphics card of similar standing — check the bottleneck calculator before you buy.