Core 2 Extreme QX9770 vs Core i5-13400F

The Core 2 Extreme QX9770 packs 4 cores / 4 threads, while the Core i5-13400F offers 10 cores / 16 threads — the Core i5-13400F has 6 more cores. Boost clocks reach 3.2 GHz on the Core 2 Extreme QX9770 versus 4.6 GHz on the Core i5-13400F — a 35.9% clock advantage for the Core i5-13400F (base: 3.2 GHz vs 2.5 GHz). The Core 2 Extreme QX9770 uses the Yorkfield (2007−2009) architecture (45 nm), while the Core i5-13400F uses Raptor Lake-S (2023−2024) (Intel 7 nm). In PassMark, the Core 2 Extreme QX9770 scores 4,611 against the Core i5-13400F's 25,029 — a 137.8% lead for the Core i5-13400F. Cinebench R23 multi-core: 2,200 vs 16,211 (152.2% advantage for the Core i5-13400F). Geekbench 6 single-core — the metric most relevant to gaming — records 451 vs 2,407, a 136.9% lead for the Core i5-13400F that directly translates to higher frame rates. Multi-core Geekbench: 1,583 vs 11,408 (151.3% advantage for the Core i5-13400F). L3 cache: 0 kB on the Core 2 Extreme QX9770 vs 20 MB (total) on the Core i5-13400F.

The Core 2 Extreme QX9770 uses the LGA775 socket (PCIe 1.1), while the Core i5-13400F uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Core 2 Extreme QX9770 versus DDR5-4800, DDR4-3200 on the Core i5-13400F — the Core i5-13400F supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-13400F supports up to 192 GB of RAM compared to 16 GB — 169.2% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core 2 Extreme QX9770) vs 20 (Core i5-13400F) — the Core i5-13400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X48,X38,P45 (Core 2 Extreme QX9770) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-13400F).

Only the Core 2 Extreme QX9770 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x (Core 2 Extreme QX9770) vs VT-x, VT-d (Core i5-13400F). Primary use case: Core 2 Extreme QX9770 targets Enthusiast, Core i5-13400F targets Gaming. Direct competitor: Core i5-13400F rivals Ryzen 5 7600.

The Core 2 Extreme QX9770 launched at $1399 MSRP, while the Core i5-13400F debuted at $196. At current prices ($1399 vs $180), the Core i5-13400F is $1219 cheaper. In terms of value (PassMark points per dollar), the Core 2 Extreme QX9770 delivers 3.3 pts/$ vs 139.1 pts/$ for the Core i5-13400F — making the Core i5-13400F the 190.7% better value option.