Intel Core i5-10400 vs Intel Core i5-9600K

The Intel Core i5-9600K is the faster chip for gaming by roughly 2%. Here is the full spec-by-spec breakdown.

Intel Core i5-9600K wins — about 2% faster for gaming
Specification Intel Core i5-10400 Intel Core i5-9600K
Gaming score 57/100 58/100
Tier C C
Manufacturer Intel Intel
Cores 6 6
Threads 12 6
Base clock 2.9 GHz 3.7 GHz
Boost clock 4.3 GHz 4.6 GHz
Power draw (TDP) 65 W 95 W
Release year 2020 2018

Which should you buy?

For gaming specifically, the Intel Core i5-9600K is the better buy — it holds a 2% lead in our index, which shows up most at 1080p and in CPU-bound titles like strategy and simulation games. The Intel Core i5-10400 runs 30W 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.