Ryzen 7 7800X3D vs Core i9-13900KS

The Ryzen 7 7800X3D packs 8 cores / 16 threads, while the Core i9-13900KS offers 24 cores / 32 threads — the Core i9-13900KS has 16 more cores. Boost clocks reach 5 GHz on the Ryzen 7 7800X3D versus 5.8 GHz on the Core i9-13900KS — a 14.8% clock advantage for the Core i9-13900KS (base: 4.4 GHz vs 3.2 GHz). The Ryzen 7 7800X3D uses the Raphael (Zen4) (2022−2023) architecture (5 nm), while the Core i9-13900KS uses Raptor Lake-S (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 7 7800X3D scores 34,293 against the Core i9-13900KS's 60,543 — a 55.4% lead for the Core i9-13900KS. Cinebench R23 multi-core: 18,500 vs 40,998 (75.6% advantage for the Core i9-13900KS). Geekbench 6 single-core — the metric most relevant to gaming — records 2,700 vs 3,123, a 14.5% lead for the Core i9-13900KS that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 21,421 (35.3% advantage for the Core i9-13900KS). L3 cache: 96 MB (total) on the Ryzen 7 7800X3D vs 36 MB (total) on the Core i9-13900KS.

The Ryzen 7 7800X3D uses the AM5 socket (PCIe 5.0), while the Core i9-13900KS uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5200 memory speed. The Core i9-13900KS 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 (Ryzen 7 7800X3D) vs 20 (Core i9-13900KS) — the Ryzen 7 7800X3D offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D) and Z790,B760 (Core i9-13900KS).

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 7 7800X3D) vs true (Core i9-13900KS). Both include integrated graphics — AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) and Intel UHD Graphics 770 (Core i9-13900KS) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K; Core i9-13900KS rivals Ryzen 9 7950X.

The Ryzen 7 7800X3D launched at $449 MSRP, while the Core i9-13900KS debuted at $699. At current prices ($384 vs $580), the Ryzen 7 7800X3D is $196 cheaper. In terms of value (PassMark points per dollar), the Ryzen 7 7800X3D delivers 89.3 pts/$ vs 104.4 pts/$ for the Core i9-13900KS — making the Core i9-13900KS the 15.6% better value option.