Core i9-13900HX vs Core Ultra 5 245KF

The Core i9-13900HX packs 24 cores / 32 threads, while the Core Ultra 5 245KF offers 14 cores / 14 threads — the Core i9-13900HX has 10 more cores. Boost clocks reach 5.4 GHz on the Core i9-13900HX versus 5.2 GHz on the Core Ultra 5 245KF — a 3.8% clock advantage for the Core i9-13900HX (base: 2.2 GHz vs 4.2 GHz). The Core i9-13900HX uses the Raptor Lake-HX (2023) architecture (Intel 7 nm), while the Core Ultra 5 245KF uses Arrow Lake-S (2024−2025) (3 nm). In PassMark, the Core i9-13900HX scores 42,437 against the Core Ultra 5 245KF's 43,424 — a 2.3% lead for the Core Ultra 5 245KF. L3 cache: 36 MB (total) on the Core i9-13900HX vs 24 MB (total) on the Core Ultra 5 245KF.

The Core i9-13900HX uses the FCBGA1964 socket (PCIe 5.0), while the Core Ultra 5 245KF uses LGA1851 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600, DDR4-3200 on the Core i9-13900HX versus 6400 on the Core Ultra 5 245KF — the Core Ultra 5 245KF supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 192 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 20 PCIe lanes. Chipset compatibility: HM770,WM790 (Core i9-13900HX) and Z890,B860 (Core Ultra 5 245KF).

Both processors feature an unlocked multiplier for overclocking. Virtualization support: VT-x, VT-d, EPT (Core i9-13900HX) vs VT-x, VT-d (Core Ultra 5 245KF). Both include integrated graphics — UHD Graphics 770 (Core i9-13900HX) and Intel Graphics (4 Xe-cores) (Core Ultra 5 245KF) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i9-13900HX targets Performance Gaming / Mobile Workstation. Direct competitor: Core i9-13900HX rivals Ryzen 9 7945HX; Core Ultra 5 245KF rivals Ryzen 5 9600X.