Core i5-655K vs Xeon E5410

The Core i5-655K packs 2 cores / 4 threads, while the Xeon E5410 offers 4 cores / 4 threads — the Xeon E5410 has 2 more cores. Boost clocks reach 3.46 GHz on the Core i5-655K versus 0.33 GHz on the Xeon E5410 — a 165.2% clock advantage for the Core i5-655K (base: 3.2 GHz vs 2.33 GHz). The Core i5-655K uses the Clarkdale (2010−2011) architecture (32 nm), while the Xeon E5410 uses Harpertown (2007−2008) (45 nm). In PassMark, the Core i5-655K scores 2,017 against the Xeon E5410's 2,032 — a 0.7% lead for the Xeon E5410. L3 cache: 4 MB (total) on the Core i5-655K vs 12 MB L2 Cache on the Xeon E5410.

The Core i5-655K uses the LGA1156 socket (PCIe 2.0), while the Xeon E5410 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i5-655K versus DDR2-667 on the Xeon E5410 — the Core i5-655K supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5410 supports up to 32 GB of RAM compared to 16 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i5-655K) vs 0 (Xeon E5410) — the Core i5-655K offers 16 more lanes for additional GPUs or NVMe drives.

Only the Core i5-655K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x virtualization. The Core i5-655K includes integrated graphics (Intel HD Graphics (Westmere)), while the Xeon E5410 requires a dedicated GPU. Primary use case: Core i5-655K targets Desktop, Xeon E5410 targets Server.

The Core i5-655K launched at $216 MSRP, while the Xeon E5410 debuted at $256. At current prices ($55 vs $20), the Xeon E5410 is $35 cheaper. In terms of value (PassMark points per dollar), the Core i5-655K delivers 36.7 pts/$ vs 101.6 pts/$ for the Xeon E5410 — making the Xeon E5410 the 93.9% better value option.