Core i7-13700K vs Core i5-10400

The Core i7-13700K packs 16 cores / 24 threads, while the Core i5-10400 offers 6 cores / 12 threads — the Core i7-13700K has 10 more cores. Boost clocks reach 5.4 GHz on the Core i7-13700K versus 4.3 GHz on the Core i5-10400 — a 22.7% clock advantage for the Core i7-13700K (base: 3.4 GHz vs 2.9 GHz). The Core i7-13700K uses the Raptor Lake, Raptor Cove, Gracemont (2022) architecture (Intel 7 nm), while the Core i5-10400 uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i7-13700K scores 45,784 against the Core i5-10400's 11,988 — a 117% lead for the Core i7-13700K. Cinebench R23 multi-core: 31,000 vs 8,313 (115.4% advantage for the Core i7-13700K). Geekbench 6 single-core — the metric most relevant to gaming — records 2,846 vs 1,600, a 56.1% lead for the Core i7-13700K that directly translates to higher frame rates. L3 cache: 30 MB (total) on the Core i7-13700K vs 12 MB (total) on the Core i5-10400.

The Core i7-13700K uses the LGA1700 socket (PCIe 5.0), while the Core i5-10400 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core i7-13700K versus DDR4-2666 on the Core i5-10400 — the Core i7-13700K supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-13700K 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 i7-13700K) vs 16 (Core i5-10400) — the Core i7-13700K offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel Z790,Intel H770,Intel B760,Intel Z690,Intel H670,Intel B660,Intel H610 (Core i7-13700K) and 400-series (Core i5-10400).

Only the Core i7-13700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Core i7-13700K) vs VT-x, VT-d, EPT (Core i5-10400). Both include integrated graphics — Intel UHD Graphics 770 (Core i7-13700K) and UHD Graphics 630 (Core i5-10400) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-10400 targets Gaming. Direct competitor: Core i7-13700K rivals Ryzen 9 7900X; Core i5-10400 rivals Ryzen 5 3600.

The Core i7-13700K launched at $409 MSRP, while the Core i5-10400 debuted at $182. At current prices ($400 vs $175), the Core i5-10400 is $225 cheaper. In terms of value (PassMark points per dollar), the Core i7-13700K delivers 114.5 pts/$ vs 68.5 pts/$ for the Core i5-10400 — making the Core i7-13700K the 50.2% better value option.