Core Ultra 7 265K vs Core i9-13900K

The Core Ultra 7 265K packs 20 cores / 20 threads, while the Core i9-13900K offers 24 cores / 32 threads — the Core i9-13900K has 4 more cores. Boost clocks reach 5.5 GHz on the Core Ultra 7 265K versus 5.7 GHz on the Core i9-13900K — a 3.6% clock advantage for the Core i9-13900K (base: 3.9 GHz vs 3 GHz). The Core Ultra 7 265K uses the Arrow Lake-S (2024−2025) architecture (3 nm), while the Core i9-13900K uses Raptor Lake, Raptor Cove, Gracemont (2022) (Intel 7 nm). In PassMark, the Core Ultra 7 265K scores 58,789 against the Core i9-13900K's 58,373 — a 0.7% lead for the Core Ultra 7 265K. Cinebench R23 multi-core: 36,309 vs 40,000 (9.7% advantage for the Core i9-13900K). Geekbench 6 single-core — the metric most relevant to gaming — records 3,283 vs 2,985, a 9.5% lead for the Core Ultra 7 265K that directly translates to higher frame rates. Multi-core Geekbench: 22,293 vs 19,967 (11% advantage for the Core Ultra 7 265K). L3 cache: 30 MB (total) on the Core Ultra 7 265K vs 36 MB (total) on the Core i9-13900K.

The Core Ultra 7 265K uses the LGA1851 socket (PCIe 5.0), while the Core i9-13900K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The Core Ultra 7 265K supports up to 256 GB of RAM compared to 192 GB — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 20 PCIe lanes. Chipset compatibility: LGA1851 (Core Ultra 7 265K) and Intel Z790,Intel Z690 (Core i9-13900K).

Both processors feature an unlocked multiplier for overclocking. Only the Core Ultra 7 265K supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core Ultra 7 265K) vs true (Core i9-13900K). Both include integrated graphics — Arc Graphics 64EU (Core Ultra 7 265K) and Intel UHD Graphics 770 (Core i9-13900K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i9-13900K targets Desktop.

The Core Ultra 7 265K launched at $309 MSRP, while the Core i9-13900K debuted at $599. At current prices ($285 vs $500), the Core Ultra 7 265K is $215 cheaper. In terms of value (PassMark points per dollar), the Core Ultra 7 265K delivers 206.3 pts/$ vs 116.7 pts/$ for the Core i9-13900K — making the Core Ultra 7 265K the 55.4% better value option.