Core i3-10105 vs Xeon E5-2665

The Core i3-10105 packs 4 cores / 8 threads, while the Xeon E5-2665 offers 8 cores / 16 threads — the Xeon E5-2665 has 4 more cores. Boost clocks reach 4.4 GHz on the Core i3-10105 versus 3.1 GHz on the Xeon E5-2665 — a 34.7% clock advantage for the Core i3-10105 (base: 3.7 GHz vs 2.4 GHz). The Core i3-10105 uses the Comet Lake-R (2021) architecture (14 nm), while the Xeon E5-2665 uses Sandy Bridge-EP (2012) (32 nm). In PassMark, the Core i3-10105 scores 8,242 against the Xeon E5-2665's 8,293 — a 0.6% lead for the Xeon E5-2665. L3 cache: 6 MB (total) on the Core i3-10105 vs 20480 kB (total) on the Xeon E5-2665.

The Core i3-10105 uses the LGA1200 socket (PCIe 3.0), while the Xeon E5-2665 uses LGA2011 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i3-10105 versus DDR3-1600 on the Xeon E5-2665 — the Core i3-10105 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5-2665 supports up to 384 GB of RAM compared to 128 GB — 100% more capacity for professional workloads. Memory channels: 2 (Core i3-10105) vs 4 (Xeon E5-2665). PCIe lanes: 16 (Core i3-10105) vs 40 (Xeon E5-2665) — the Xeon E5-2665 offers 24 more lanes for additional GPUs or NVMe drives.

Neither processor supports overclocking. Only the Xeon E5-2665 supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core i3-10105 includes integrated graphics (UHD Graphics 630), while the Xeon E5-2665 requires a dedicated GPU. Primary use case: Core i3-10105 targets Desktop, Xeon E5-2665 targets Server.