Core 2 Duo T7700 vs Core i5-750

The Core 2 Duo T7700 packs 2 cores / 2 threads, while the Core i5-750 offers 4 cores / 4 threads — the Core i5-750 has 2 more cores. Boost clocks reach 2.4 GHz on the Core 2 Duo T7700 versus 3.2 GHz on the Core i5-750 — a 28.6% clock advantage for the Core i5-750 (base: 2.4 GHz vs 2.66 GHz). The Core 2 Duo T7700 uses the Merom (2006−2008) architecture (65 nm), while the Core i5-750 uses Lynnfield (2009−2010) (45 nm). In PassMark, the Core 2 Duo T7700 scores 2,554 against the Core i5-750's 2,546 — a 0.3% lead for the Core 2 Duo T7700. Geekbench 6 single-core — the metric most relevant to gaming — records 254 vs 424, a 50.1% lead for the Core i5-750 that directly translates to higher frame rates. L3 cache: 0 kB on the Core 2 Duo T7700 vs 8 MB (total) on the Core i5-750.

The Core 2 Duo T7700 uses the PGA478 socket (PCIe 1.1), while the Core i5-750 uses LGA1156 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Core 2 Duo T7700 versus DDR3-1333 on the Core i5-750 — the Core i5-750 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-750 supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: GL960,GME965,GM965,PM965 (Core 2 Duo T7700) and P55,H55,H57,Q57 (Core i5-750).

Neither processor supports overclocking. Virtualization support: VT-x (Core 2 Duo T7700) vs VT-x, VT-d, EPT (Core i5-750). Primary use case: Core 2 Duo T7700 targets Budget, Core i5-750 targets Legacy Desktop. Direct competitor: Core 2 Duo T7700 rivals Athlon 64 X2 5000+; Core i5-750 rivals Phenom II X4 965.