Core Ultra 7 255H vs Core i5-13600K

The Core Ultra 7 255H packs 16 cores / 16 threads, while the Core i5-13600K offers 14 cores / 20 threads — the Core Ultra 7 255H has 2 more cores. Boost clocks reach 5.1 GHz on the Core Ultra 7 255H versus 5.1 GHz on the Core i5-13600K — identical boost frequencies (base: 4.4 GHz vs 3.5 GHz). The Core Ultra 7 255H uses the Arrow Lake-H (2025) architecture (5 nm), while the Core i5-13600K uses Raptor Lake, Raptor Cove, Gracemont (2022) (Intel 7 nm). In PassMark, the Core Ultra 7 255H scores 30,932 against the Core i5-13600K's 37,655 — a 19.6% lead for the Core i5-13600K. Both processors carry 24 MB of L3 cache.

The Core Ultra 7 255H uses the FCBGA2049 socket (PCIe 5.0), while the Core i5-13600K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The Core i5-13600K 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: 28 (Core Ultra 7 255H) vs 20 (Core i5-13600K) — the Core Ultra 7 255H offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM870,WM880 (Core Ultra 7 255H) and Intel 600 series,Intel 700 series (Core i5-13600K).

Only the Core i5-13600K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x, VT-d virtualization. Both include integrated graphics — Intel Arc Graphics 140T (Core Ultra 7 255H) and UHD Graphics 770 (Core i5-13600K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core Ultra 7 255H targets High-End Laptop, Core i5-13600K targets Desktop.