Core i9-13900F vs Core i5-10400F

The Core i9-13900F packs 24 cores / 32 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i9-13900F has 18 more cores. Boost clocks reach 5.5 GHz on the Core i9-13900F versus 4.3 GHz on the Core i5-10400F — a 24.5% clock advantage for the Core i9-13900F (base: 2 GHz vs 2.9 GHz). The Core i9-13900F uses the Raptor Lake-S (2023−2024) architecture (Intel 7 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i9-13900F scores 48,934 against the Core i5-10400F's 13,029 — a 115.9% lead for the Core i9-13900F. Cinebench R23 multi-core: 37,326 vs 8,191 (128% advantage for the Core i9-13900F). Geekbench 6 single-core — the metric most relevant to gaming — records 2,801 vs 1,454, a 63.3% lead for the Core i9-13900F that directly translates to higher frame rates. Multi-core Geekbench: 17,199 vs 5,783 (99.3% advantage for the Core i9-13900F). L3 cache: 36 MB (total) on the Core i9-13900F vs 12 MB (total) on the Core i5-10400F.

The Core i9-13900F 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 i9-13900F versus DDR4-2666 on the Core i5-10400F — the Core i9-13900F supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i9-13900F 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 i9-13900F) vs 16 (Core i5-10400F) — the Core i9-13900F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA1700 (Core i9-13900F) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Neither processor supports overclocking. Only the Core i9-13900F supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.

The Core i9-13900F launched at $524 MSRP, while the Core i5-10400F debuted at $160. At current prices ($536 vs $102), the Core i5-10400F is $434 cheaper. In terms of value (PassMark points per dollar), the Core i9-13900F delivers 91.3 pts/$ vs 127.7 pts/$ for the Core i5-10400F — making the Core i5-10400F the 33.3% better value option.