Core i3-2102 vs Core i5-655K

Both the Core i3-2102 and Core i5-655K share an identical 2-core/4-thread configuration. Boost clocks reach 3.1 GHz on the Core i3-2102 versus 3.46 GHz on the Core i5-655K — a 11% clock advantage for the Core i5-655K (base: 3.1 GHz vs 3.2 GHz). The Core i3-2102 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i5-655K uses Clarkdale (2010−2011) (32 nm). In PassMark, the Core i3-2102 scores 2,029 against the Core i5-655K's 2,017 — a 0.6% lead for the Core i3-2102. Geekbench 6 single-core — the metric most relevant to gaming — records 515 vs 560, a 8.4% lead for the Core i5-655K that directly translates to higher frame rates. Multi-core Geekbench: 1,082 vs 1,250 (14.4% advantage for the Core i5-655K). L3 cache: 3 MB (total) on the Core i3-2102 vs 4 MB (total) on the Core i5-655K.

The Core i3-2102 uses the LGA1155 socket (PCIe 2.0), while the Core i5-655K uses LGA1156 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1333 memory speed. The Core i3-2102 supports up to 32 GB of RAM compared to 16 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H61,H67,P67,Z68 (Core i3-2102) and H55,H57,P55 (Core i5-655K).

Only the Core i5-655K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x virtualization. Both include integrated graphics — Intel HD Graphics 2000 (Core i3-2102) and Intel HD Graphics (Westmere) (Core i5-655K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i3-2102 targets Office Desktop, Core i5-655K targets Desktop.

At launch, the Core i3-2102 was priced at $117, while the Core i5-655K came in at $216. On launch pricing ($117 vs $216), Core i3-2102 was $99 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i3-2102 delivers 17.3 pts/$ vs 9.3 pts/$ for the Core i5-655K — making the Core i3-2102 the 60% better value option.

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