Celeron J4105 vs Core i5-4278U

The Celeron J4105 packs 4 cores / 4 threads, while the Core i5-4278U offers 2 cores / 4 threads — the Celeron J4105 has 2 more cores. Boost clocks reach 2.5 GHz on the Celeron J4105 versus 3.1 GHz on the Core i5-4278U — a 21.4% clock advantage for the Core i5-4278U (base: 1.5 GHz vs 2.6 GHz). The Celeron J4105 uses the Goldmont Plus (2017) architecture (14 nm), while the Core i5-4278U uses Haswell (2013−2015) (22 nm). In PassMark, the Celeron J4105 scores 2,820 against the Core i5-4278U's 2,826 — a 0.2% lead for the Core i5-4278U. L3 cache: 4 MB on the Celeron J4105 vs 3 MB on the Core i5-4278U.

The Celeron J4105 uses the FCBGA1090 socket (PCIe 3.0), while the Core i5-4278U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 2400 on the Celeron J4105 versus DDR3L-1600 on the Core i5-4278U — the Celeron J4105 supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-4278U supports up to 16 GB of RAM compared to 8 — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 6 (Celeron J4105) vs 12 (Core i5-4278U) — the Core i5-4278U offers 6 more lanes for additional GPUs or NVMe drives. Chipset compatibility: BGA1090 (Celeron J4105) and Intel HM86,Intel HM87,Intel QM87 (Core i5-4278U).

Both support true virtualization. Both include integrated graphics — Intel UHD Graphics 600 (Celeron J4105) and Intel Iris Graphics 5100 (Core i5-4278U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Celeron J4105 rivals Ryzen Embedded R1305G.