Celeron 5305U vs Core i5-10400F

The Celeron 5305U packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 2.3 GHz on the Celeron 5305U versus 4.3 GHz on the Core i5-10400F — a 60.6% clock advantage for the Core i5-10400F (base: 2.3 GHz vs 2.9 GHz). The Celeron 5305U uses the Comet Lake-U (2019−2020) architecture (14 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Celeron 5305U scores 1,307 against the Core i5-10400F's 13,029 — a 163.5% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 480 vs 1,454, a 100.7% lead for the Core i5-10400F that directly translates to higher frame rates. Multi-core Geekbench: 865 vs 5,783 (148% advantage for the Core i5-10400F). L3 cache: 2 MB on the Celeron 5305U vs 12 MB (total) on the Core i5-10400F.

The Celeron 5305U uses the FCBGA1528 socket (PCIe 3.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2400 memory speed. The Core i5-10400F supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Celeron 5305U) vs 16 (Core i5-10400F) — the Core i5-10400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Comet Lake-U (Celeron 5305U) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Neither processor supports overclocking. Both support VT-x, VT-d virtualization. The Celeron 5305U includes integrated graphics (UHD Graphics (Comet Lake)), while the Core i5-10400F requires a dedicated GPU. Primary use case: Celeron 5305U targets Budget, Core i5-10400F targets Gaming. Direct competitor: Celeron 5305U rivals Pentium Gold 6405U; Core i5-10400F rivals Ryzen 5 3600.