Celeron 4305U vs Core i5-4302Y

The Celeron 4305U packs 2 cores / 2 threads, matching the Core i5-4302Y's 2 cores. Boost clocks reach 2.2 GHz on the Celeron 4305U versus 2.3 GHz on the Core i5-4302Y — a 4.4% clock advantage for the Core i5-4302Y (base: 2.2 GHz vs 1.6 GHz). The Celeron 4305U uses the Whiskey Lake-U (2018−2019) architecture (14 nm), while the Core i5-4302Y uses Haswell (2013−2015) (22 nm). In PassMark, the Celeron 4305U scores 1,562 against the Core i5-4302Y's 1,580 — a 1.1% lead for the Core i5-4302Y. L3 cache: 2 MB (total) on the Celeron 4305U vs 3 MB on the Core i5-4302Y.

The Celeron 4305U uses the FCBGA1528 socket (PCIe 3.0), while the Core i5-4302Y uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 2133 on the Celeron 4305U versus DDR3L-1600 / LPDDR3-1600 on the Core i5-4302Y — the Celeron 4305U supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 4305U supports up to 64 of RAM compared to 16 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Celeron 4305U) vs 12 (Core i5-4302Y) — the Celeron 4305U offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Whiskey Lake-U (Celeron 4305U) and HM86,HM87 (Core i5-4302Y).

Neither processor supports overclocking. Virtualization support: true (Celeron 4305U) vs VT-x / VT-d / EPT (Core i5-4302Y). Both include integrated graphics — Intel UHD Graphics 610 (Celeron 4305U) and Intel HD Graphics 4200 (Core i5-4302Y) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 4305U targets Budget, Core i5-4302Y targets Productivity. Direct competitor: Celeron 4305U rivals Pentium Gold 5405U.