Core i9-13900KS vs Xeon Platinum 8380

The Core i9-13900KS packs 24 cores / 32 threads, while the Xeon Platinum 8380 offers 40 cores / 80 threads — the Xeon Platinum 8380 has 16 more cores. Boost clocks reach 5.8 GHz on the Core i9-13900KS versus 3.4 GHz on the Xeon Platinum 8380 — a 52.2% clock advantage for the Core i9-13900KS (base: 3.2 GHz vs 2.3 GHz). The Core i9-13900KS uses the Raptor Lake-S (2023−2024) architecture (Intel 7 nm), while the Xeon Platinum 8380 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Core i9-13900KS scores 60,543 against the Xeon Platinum 8380's 62,318 — a 2.9% lead for the Xeon Platinum 8380. Geekbench 6 single-core — the metric most relevant to gaming — records 3,123 vs 1,300, a 82.4% lead for the Core i9-13900KS that directly translates to higher frame rates. Multi-core Geekbench: 21,421 vs 40,000 (60.5% advantage for the Xeon Platinum 8380). L3 cache: 36 MB (total) on the Core i9-13900KS vs 60 MB (total) on the Xeon Platinum 8380.

The Core i9-13900KS uses the LGA1700 socket (PCIe 5.0), while the Xeon Platinum 8380 uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core i9-13900KS versus DDR4-3200 on the Xeon Platinum 8380 — the Core i9-13900KS supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8380 supports up to 6144 GB of RAM compared to 192 GB — 187.9% more capacity for professional workloads. Memory channels: 2 (Core i9-13900KS) vs 8 (Xeon Platinum 8380). PCIe lanes: 20 (Core i9-13900KS) vs 64 (Xeon Platinum 8380) — the Xeon Platinum 8380 offers 44 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z790,B760 (Core i9-13900KS) and C621A (Xeon Platinum 8380).

Only the Core i9-13900KS has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Platinum 8380 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core i9-13900KS) vs VT-x, VT-d (Xeon Platinum 8380). The Core i9-13900KS includes integrated graphics (Intel UHD Graphics 770), while the Xeon Platinum 8380 requires a dedicated GPU. Primary use case: Xeon Platinum 8380 targets Datacenter. Direct competitor: Core i9-13900KS rivals Ryzen 9 7950X; Xeon Platinum 8380 rivals EPYC 7543.

The Core i9-13900KS launched at $699 MSRP, while the Xeon Platinum 8380 debuted at $2010. At current prices ($580 vs $965), the Core i9-13900KS is $385 cheaper. In terms of value (PassMark points per dollar), the Core i9-13900KS delivers 104.4 pts/$ vs 64.6 pts/$ for the Xeon Platinum 8380 — making the Core i9-13900KS the 47.1% better value option.