Core i3-1215U vs Core i7-5930K

The Core i3-1215U packs 6 cores / 8 threads, matching the Core i7-5930K's 6 cores. Boost clocks reach 4.4 GHz on the Core i3-1215U versus 3.7 GHz on the Core i7-5930K — a 17.3% clock advantage for the Core i3-1215U (base: 1.2 GHz vs 3.5 GHz). The Core i3-1215U uses the Alder Lake-U (2022) architecture (Intel 7 nm), while the Core i7-5930K uses Haswell-E (2014) (22 nm). In PassMark, the Core i3-1215U scores 10,281 against the Core i7-5930K's 10,369 — a 0.9% lead for the Core i7-5930K. Geekbench 6 single-core — the metric most relevant to gaming — records 2,079 vs 1,000, a 70.1% lead for the Core i3-1215U that directly translates to higher frame rates. L3 cache: 10 MB (total) on the Core i3-1215U vs 15 MB (total) on the Core i7-5930K.

The Core i3-1215U uses the FCBGA1744 socket (PCIe 5.0), while the Core i7-5930K uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches LPDDR5-5200 on the Core i3-1215U versus DDR4-2133 on the Core i7-5930K — the Core i3-1215U supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 64 GB of RAM. Memory channels: 2 (Core i3-1215U) vs 4 (Core i7-5930K). PCIe lanes: 20 (Core i3-1215U) vs 40 (Core i7-5930K) — the Core i7-5930K offers 20 more lanes for additional GPUs or NVMe drives.

Only the Core i7-5930K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d, EPT (Core i3-1215U) vs VT-x, VT-d (Core i7-5930K). The Core i3-1215U includes integrated graphics (UHD Graphics for 12th Gen (64 EU)), while the Core i7-5930K requires a dedicated GPU. Primary use case: Core i3-1215U targets Mainstream Laptop, Core i7-5930K targets High End Desktop. Direct competitor: Core i3-1215U rivals Ryzen 3 5425U; Core i7-5930K rivals Ryzen 5 1600.