Core i5-12400F vs Core i3-550

The Core i5-12400F packs 6 cores / 12 threads, while the Core i3-550 offers 2 cores / 4 threads — the Core i5-12400F has 4 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 3.2 GHz on the Core i3-550 — a 31.6% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 3.2 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Core i3-550 uses Clarkdale (2010−2011) (32 nm). In PassMark, the Core i5-12400F scores 19,532 against the Core i3-550's 1,632 — a 169.2% lead for the Core i5-12400F. Cinebench R23 multi-core: 12,380 vs 1,320 (161.5% advantage for the Core i5-12400F). Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 437, a 118.2% lead for the Core i5-12400F that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 899 (31.1% advantage for the Core i3-550). L3 cache: 18 MB (total) on the Core i5-12400F vs 4 MB (total) on the Core i3-550.

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Core i3-550 uses LGA1156 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR3-1333 on the Core i3-550 — the Core i5-12400F supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-12400F supports up to 128 GB of RAM compared to 16 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 16 (Core i3-550) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and H55,H57,P55,Q57 (Core i3-550).

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs Yes (Core i3-550). The Core i3-550 includes integrated graphics (Intel HD Graphics), while the Core i5-12400F requires a dedicated GPU. Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

The Core i5-12400F launched at $174 MSRP, while the Core i3-550 debuted at $138. At current prices ($110 vs $5), the Core i3-550 is $105 cheaper. In terms of value (PassMark points per dollar), the Core i5-12400F delivers 177.6 pts/$ vs 326.4 pts/$ for the Core i3-550 — making the Core i3-550 the 59.1% better value option.