Core i9-11980HK vs Core i9-10900K

The Core i9-11980HK packs 8 cores / 16 threads, while the Core i9-10900K offers 10 cores / 20 threads — the Core i9-10900K has 2 more cores. Boost clocks reach 5 GHz on the Core i9-11980HK versus 5.2 GHz on the Core i9-10900K — a 3.9% clock advantage for the Core i9-10900K (base: 2.6 GHz vs 3.7 GHz). The Core i9-11980HK uses the Tiger Lake-HK (2021) architecture (10 nm SuperFin), while the Core i9-10900K uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i9-11980HK scores 22,244 against the Core i9-10900K's 22,382 — a 0.6% lead for the Core i9-10900K. L3 cache: 24 MB (total) on the Core i9-11980HK vs 20 MB (total) on the Core i9-10900K.

The Core i9-11980HK uses the FCBGA1787 socket (PCIe 4.0), while the Core i9-10900K uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i9-11980HK) vs 16 (Core i9-10900K) — the Core i9-11980HK offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM570,WM590 (Core i9-11980HK) and Intel 400 series (Core i9-10900K).

Both processors feature an unlocked multiplier for overclocking. Only the Core i9-11980HK supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, EPT (Core i9-11980HK) vs VT-x, VT-d (Core i9-10900K). Both include integrated graphics — UHD Graphics 32EUs (Core i9-11980HK) and UHD Graphics 630 (Core i9-10900K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i9-11980HK targets Enthusiast Gaming Laptop, Core i9-10900K targets Desktop. Direct competitor: Core i9-11980HK rivals Ryzen 9 5900HX.