Celeron G1820T vs Core i5-10400F

The Celeron G1820T 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 2.4 GHz on the Celeron G1820T versus 4.3 GHz on the Core i5-10400F — a 56.7% clock advantage for the Core i5-10400F (base: 2.4 GHz vs 2.9 GHz). The Celeron G1820T uses the Haswell (2013−2015) architecture (22 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Celeron G1820T scores 1,599 against the Core i5-10400F's 13,029 — a 156.3% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 415 vs 1,454, a 111.2% lead for the Core i5-10400F that directly translates to higher frame rates. Multi-core Geekbench: 629 vs 5,783 (160.8% advantage for the Core i5-10400F). L3 cache: 3 MB (total) on the Celeron G1820T vs 12 MB (total) on the Core i5-10400F.

The Celeron G1820T uses the LGA1150 socket (PCIe 3.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Celeron G1820T versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 32 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H81,B85,H87,Z87,H97,Z97 (Celeron G1820T) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Neither processor supports overclocking. Virtualization support: VT-x (Celeron G1820T) vs VT-x, VT-d (Core i5-10400F). The Celeron G1820T includes integrated graphics (HD Graphics (Haswell)), while the Core i5-10400F requires a dedicated GPU. Primary use case: Celeron G1820T targets Budget, Core i5-10400F targets Gaming. Direct competitor: Celeron G1820T rivals Pentium G3220T; Core i5-10400F rivals Ryzen 5 3600.