Core i7-12700K vs Core i7-3517U

The Core i7-12700K packs 12 cores / 20 threads, while the Core i7-3517U offers 2 cores / 4 threads — the Core i7-12700K has 10 more cores. Boost clocks reach 5 GHz on the Core i7-12700K versus 3 GHz on the Core i7-3517U — a 50% clock advantage for the Core i7-12700K (base: 3.6 GHz vs 1.9 GHz). The Core i7-12700K uses the Alder Lake, Golden Cove, Gracemont (2021) architecture (10 nm), while the Core i7-3517U uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the Core i7-12700K scores 34,347 against the Core i7-3517U's 2,108 — a 176.9% lead for the Core i7-12700K. L3 cache: 25 MB (total) on the Core i7-12700K vs 4 MB (total) on the Core i7-3517U.

The Core i7-12700K uses the LGA1700 socket (PCIe 5.0), while the Core i7-3517U uses BGA1023 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Core i7-12700K versus 1600 on the Core i7-3517U — the Core i7-12700K supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-12700K supports up to 128 of RAM compared to 32 — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i7-12700K) vs 16 (Core i7-3517U) — the Core i7-12700K offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z690,B660 (Core i7-12700K) and HM76,UM77,QM77,QS77 (Core i7-3517U).

Only the Core i7-12700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i7-12700K) vs true (Core i7-3517U). Both include integrated graphics — Intel UHD Graphics 770 (Core i7-12700K) and Intel HD Graphics 4000 (Core i7-3517U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X; Core i7-3517U rivals AMD A10-4655M.