Core i7-11700K vs Core i5-12400F

The Core i7-11700K packs 8 cores / 16 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Core i7-11700K has 2 more cores. Boost clocks reach 5 GHz on the Core i7-11700K versus 4.4 GHz on the Core i5-12400F — a 12.8% clock advantage for the Core i7-11700K (base: 3.6 GHz vs 2.5 GHz). The Core i7-11700K uses the Rocket Lake (2021) architecture (14 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Core i7-11700K scores 24,362 against the Core i5-12400F's 19,532 — a 22% lead for the Core i7-11700K. Cinebench R23 multi-core: 14,732 vs 12,380 (17.4% advantage for the Core i7-11700K). L3 cache: 16 MB (total) on the Core i7-11700K vs 18 MB (total) on the Core i5-12400F.

The Core i7-11700K uses the LGA1200 socket (PCIe 4.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Core i7-11700K versus DDR5-4800, DDR4-3200 on the Core i5-12400F — the Core i5-12400F supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 20 PCIe lanes. Chipset compatibility: Z590,B560 (Core i7-11700K) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Virtualization support: VT-x, VT-d (Core i7-11700K) vs VT-x, VT-d, EPT (Core i5-12400F). The Core i7-11700K includes integrated graphics (UHD Graphics 750), while the Core i5-12400F requires a dedicated GPU. Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

The Core i7-11700K launched at $399 MSRP, while the Core i5-12400F debuted at $174. At current prices ($350 vs $110), the Core i5-12400F is $240 cheaper. In terms of value (PassMark points per dollar), the Core i7-11700K delivers 69.6 pts/$ vs 177.6 pts/$ for the Core i5-12400F — making the Core i5-12400F the 87.4% better value option.