The Intel Core i3-14100 wins in 11 out of 14 comparable specs, with 1 tie. Its biggest advantage is L2 Cache (233% better).
Core i5-8400 wins in 2 specs (Total Cores: 50% better).
Recommendation
Choose Core i3-14100 if you want the best overall performance — especially l2 cache.
Choose Core i5-8400 if total cores matters more to you.
AI Versus Verdict
The Intel Core i3-14100 is the objective winner of this comparison, securing victories in eleven out of fourteen evaluated categories. Its most significant technical advantage is the L2 cache, which is 233% larger than that of the competing processor. This substantial improvement in cache capacity serves as the primary differentiator between the two components, providing the Intel Core i3-14100 with a clear lead in the majority of measured specifications.
Users prioritizing modern architecture and cache-heavy performance should select the Intel Core i3-14100 for their build. Conversely, the Intel Core i5-8400 remains a viable option for those who specifically require a higher total core count, as it maintains a 50% advantage in that category. Choosing between these two processors depends on whether your specific workload benefits more from the superior cache size of the newer model or the increased core count of the older unit.
Generated by Gemini from the objective spec comparison above. AI advice is a summary, not a benchmark — always verify critical purchases.