Intel Core 2 Duo E7400 2-core LGA775
The provided specs are contradictory, listing modern features like DDR5 memory and a 4.3GHz boost clock that this legacy 45nm Core 2 Duo chip cannot support, making the listed PassMark score of 20507 impossible for its actual 2.8GHz base frequency. Its real-world strength lies in its unlocked multiplier on the LGA 775 socket, offering a low-cost entry point for overclocking experimentation on vintage systems. This processor is best for hobbyists maintaining legacy Windows XP or retro gaming rigs who need a direct, period-correct replacement part.
Snapshot
Pros & Cons
Pros
- Strong efficiency (88th percentile) 88th
- Strong platform (87th percentile) 87th
- Strong feature (83rd percentile) 83rd
- Strong single thread (83rd percentile) 83rd
Cons
- Below average social proof (9th percentile)
The proof
Performance
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Core 2 Duo |
| Model | E7400 |
| Codename | Raphael |
| Class | desktop |
| Process | 45 |
Cores & Clocks
| Cores | 2 |
| P-cores | 6 |
| Threads | 2 |
| Base Clock | 2800 |
| Boost Clock | 4300 |
Cache
| L2 Cache | 3 |
| L3 Cache | 3 MB |
Performance
| PassMark Multi | 21644 |
| PassMark Single | 3235 |
Memory
| Memory Type | DDR5 |
| Max Speed | 5200 |
| ECC | Yes |
Platform & Power
| Socket | LGA775 |
| PCIe | 5 |
| PCIe Lanes | 24 |
| TDP | 65 |
| Unlocked | Yes |
Graphics & AI
| Integrated Graphics | Radeon Graphics |
vs Competition
| Spec | Intel Core 2 Duo E7400 | AMD Ryzen 7 9800X3D | Dell Inspiron 7700 | HP Celeron 14-dq3000dx | DAKboard CPU v4 | Expert X6AIR |
|---|---|---|---|---|---|---|
| Cores | 2 | 8 | 10 | 2 | 4 | - |
| Threads | 2 | 16 | 12 | 2 | - | - |
| Boost Clock Mhz | 4300 | 5200 | 4700 | 2800 | - | - |
| L3 Cache Mb | 3 | 96 | 12 | 4 | - | - |
| Tdp W | 65 | 120 | 15 | 6 | - | - |
| Socket | LGA775 | AM5 | Intel BGA 1744 | Intel BGA 1338 | BGA | BGA |
| Integrated Graphics | Radeon Graphics | AMD Radeon Graphics | Iris Xe 96EU | Intel UHD Graphics | - | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | Efficiency | Multi Thread | Social Proof | Single Thread |
|---|---|---|---|---|---|---|---|
| Intel Core 2 Duo E7400 | 77.1 | 83.3 | 87.2 | 87.7 | 77.9 | 9.1 | 83 |
| AMD Ryzen 7 9800X3D Compare | 91.2 | 98.4 | 95.1 | 87.5 | 90 | 96.5 | 95.6 |
| Dell Inspiron 7700 Compare | 62.3 | 69.4 | 70.8 | 99.4 | 66.4 | 27.4 | 82 |
| HP Celeron 14-dq3000dx Compare | 17.2 | 54.4 | 54.4 | 32 | 10.9 | 9.1 | 30.2 |
| DAKboard CPU v4 Compare | 12.6 | 20.1 | 17.5 | 11.9 | 17 | 59.7 | 20 |
| Expert X6AIR Compare | 3.3 | 20.1 | 17.5 | 3.9 | 3.9 | 71.6 | 14.9 |
Price
Value & Pricing
Amazon 1 offer From ¥57,586
We started tracking prices for this product on Jun 13, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
