Core i9-14900KF vs Core i5-10400F

The Core i9-14900KF packs 24 cores / 32 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i9-14900KF has 18 more cores. Boost clocks reach 5.8 GHz on the Core i9-14900KF versus 4.3 GHz on the Core i5-10400F — a 29.7% clock advantage for the Core i9-14900KF (base: 3.2 GHz vs 2.9 GHz). The Core i9-14900KF uses the Raptor Lake-R (2023−2025) architecture (Intel 7 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i9-14900KF scores 58,333 against the Core i5-10400F's 13,029 — a 127% lead for the Core i9-14900KF. Cinebench R23 multi-core: 42,000 vs 8,191 (134.7% advantage for the Core i9-14900KF). Geekbench 6 single-core — the metric most relevant to gaming — records 3,322 vs 1,454, a 78.2% lead for the Core i9-14900KF that directly translates to higher frame rates. Multi-core Geekbench: 23,051 vs 5,783 (119.8% advantage for the Core i9-14900KF). L3 cache: 36 MB (total) on the Core i9-14900KF vs 12 MB (total) on the Core i5-10400F.

The Core i9-14900KF uses the LGA1700 socket (PCIe 5.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core i9-14900KF versus DDR4-2666 on the Core i5-10400F — the Core i9-14900KF supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i9-14900KF supports up to 192 GB of RAM compared to 128 GB — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i9-14900KF) vs 16 (Core i5-10400F) — the Core i9-14900KF offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel Z790,Intel B760 (Core i9-14900KF) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Only the Core i9-14900KF has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Core i9-14900KF) vs VT-x, VT-d (Core i5-10400F). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i9-14900KF rivals Ryzen 9 7950X; Core i5-10400F rivals Ryzen 5 3600.

The Core i9-14900KF launched at $564 MSRP, while the Core i5-10400F debuted at $160. At current prices ($480 vs $102), the Core i5-10400F is $378 cheaper. In terms of value (PassMark points per dollar), the Core i9-14900KF delivers 121.5 pts/$ vs 127.7 pts/$ for the Core i5-10400F — making the Core i5-10400F the 5% better value option.