Core i5-6300U vs Core i5-2400S

The Core i5-6300U packs 2 cores / 4 threads, while the Core i5-2400S offers 4 cores / 4 threads — the Core i5-2400S has 2 more cores. Boost clocks reach 3 GHz on the Core i5-6300U versus 3.3 GHz on the Core i5-2400S — a 9.5% clock advantage for the Core i5-2400S (base: 2.4 GHz vs 2.5 GHz). The Core i5-6300U uses the Skylake (2015−2016) architecture (14 nm), while the Core i5-2400S uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core i5-6300U scores 3,207 against the Core i5-2400S's 3,187 — a 0.6% lead for the Core i5-6300U. Geekbench 6 single-core — the metric most relevant to gaming — records 967 vs 578, a 50.4% lead for the Core i5-6300U that directly translates to higher frame rates. L3 cache: 3 MB on the Core i5-6300U vs 6144 kB (total) on the Core i5-2400S.

The Core i5-6300U uses the BGA1356 socket (PCIe 3.0), while the Core i5-2400S uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 on the Core i5-6300U versus DDR3-1333 on the Core i5-2400S — the Core i5-6300U supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Core i5-6300U) vs 16 (Core i5-2400S) — the Core i5-2400S offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Skylake-U (Core i5-6300U) and H61,H67,P67,Z68,B75,Z77 (Core i5-2400S).

Virtualization support: VT-x, VT-d, EPT (Core i5-6300U) vs Yes (Core i5-2400S). Both include integrated graphics — HD Graphics 520 (Core i5-6300U) and Intel HD Graphics 2000 (Core i5-2400S) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-6300U targets Mainstream Laptop. Direct competitor: Core i5-6300U rivals PRO A12-9800B.