Core 2 Duo T7400 vs Core i5-10400F

The Core 2 Duo T7400 packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 2.16 GHz on the Core 2 Duo T7400 versus 4.3 GHz on the Core i5-10400F — a 66.3% clock advantage for the Core i5-10400F (base: 2.16 GHz vs 2.9 GHz). The Core 2 Duo T7400 uses the Merom (2006−2008) architecture (65 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core 2 Duo T7400 scores 1,861 against the Core i5-10400F's 13,029 — a 150% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 310 vs 1,454, a 129.7% lead for the Core i5-10400F that directly translates to higher frame rates. Multi-core Geekbench: 550 vs 5,783 (165.3% advantage for the Core i5-10400F). L3 cache: 0 kB on the Core 2 Duo T7400 vs 12 MB (total) on the Core i5-10400F.

The Core 2 Duo T7400 uses the PGA478 socket (PCIe 1.1), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Core 2 Duo T7400 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 66.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 4 GB — 187.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: 945GT,GME965 (Core 2 Duo T7400) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Neither processor supports overclocking. Virtualization support: VT-x (Core 2 Duo T7400) vs VT-x, VT-d (Core i5-10400F). Primary use case: Core 2 Duo T7400 targets Legacy Laptop, Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.