Core i5-6287U vs Core i3-8145U

Both the Core i5-6287U and Core i3-8145U share an identical 2-core/4-thread configuration. Boost clocks reach 3.5 GHz on the Core i5-6287U versus 3.9 GHz on the Core i3-8145U — a 10.8% clock advantage for the Core i3-8145U (base: 3.1 GHz vs 2.1 GHz). The Core i5-6287U uses the Skylake (2015−2016) architecture (14 nm), while the Core i3-8145U uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Core i5-6287U scores 3,801 against the Core i3-8145U's 3,781 — a 0.5% lead for the Core i5-6287U. L3 cache: 4 MB on the Core i5-6287U vs 4 MB (total) on the Core i3-8145U.

The Core i5-6287U uses the BGA1356 socket (PCIe 3.0), while the Core i3-8145U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2133 memory speed. The Core i3-8145U supports up to 64 GB of RAM compared to 32 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Core i5-6287U) vs 16 (Core i3-8145U) — the Core i3-8145U offers 4 more lanes for additional GPUs or NVMe drives.

Neither processor supports overclocking. Virtualization support: VT-x, VT-d, EPT (Core i5-6287U) vs VT-x, VT-d (Core i3-8145U). Both include integrated graphics — Iris Graphics 550 (Core i5-6287U) and UHD Graphics 620 (Core i3-8145U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-6287U targets High Performance Laptop, Core i3-8145U targets Mobile. Direct competitor: Core i5-6287U rivals FX-9800P.