Core i3-550 vs Core i5-12400F

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

The Core i3-550 uses the LGA1156 socket (PCIe 2.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i3-550 versus DDR5-4800, DDR4-3200 on the Core i5-12400F — the Core i5-12400F supports 260.1% 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 — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i3-550) vs 20 (Core i5-12400F) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H55,H57,P55,Q57 (Core i3-550) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Virtualization support: Yes (Core i3-550) vs VT-x, VT-d, EPT (Core i5-12400F). 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.

At launch, the Core i3-550 was priced at $138, while the Core i5-12400F came in at $174. On launch pricing ($138 vs $174), Core i3-550 was $36 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i3-550 delivers 11.8 pts/$ vs 112.3 pts/$ for the Core i5-12400F — making the Core i5-12400F the 161.9% better value option.

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