Core i5-13600K vs Pentium 3805U

The Core i5-13600K packs 14 cores / 20 threads, while the Pentium 3805U offers 2 cores / 2 threads — the Core i5-13600K has 12 more cores. Boost clocks reach 5.1 GHz on the Core i5-13600K versus 1.9 GHz on the Pentium 3805U — a 91.4% clock advantage for the Core i5-13600K (base: 3.5 GHz vs 1.9 GHz). The Core i5-13600K uses the Raptor Lake, Raptor Cove, Gracemont (2022) architecture (Intel 7 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Core i5-13600K scores 37,655 against the Pentium 3805U's 1,196 — a 187.7% lead for the Core i5-13600K. L3 cache: 24 MB on the Core i5-13600K vs 2 MB (total) on the Pentium 3805U.

The Core i5-13600K uses the LGA1700 socket (PCIe 5.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core i5-13600K versus DDR3L-1600 on the Pentium 3805U — the Core i5-13600K supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-13600K supports up to 192 GB of RAM compared to 16 GB — 169.2% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-13600K) vs 12 (Pentium 3805U) — the Core i5-13600K offers 8 more lanes for additional GPUs or NVMe drives.

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 — UHD Graphics 770 (Core i5-13600K) and HD Graphics (Broadwell) (Pentium 3805U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-13600K targets Desktop, Pentium 3805U targets Mobile.