Mobile Pentium 4 520 vs Core 2 Duo E7400
Aggregate performance score
Core 2 Duo E7400 outperforms Mobile Pentium 4 520 by a whopping 333% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Duo E7400 and Mobile Pentium 4 520 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2750 | 3295 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Mobile Pentium 4 |
| Power efficiency | 0.95 | 0.16 |
| Architecture codename | Wolfdale (2008−2010) | Northwood (2002−2004) |
| Release date | October 2008 (16 years ago) | no data (2024 years ago) |
Detailed specifications
Core 2 Duo E7400 and Mobile Pentium 4 520 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Base clock speed | 2.8 GHz | no data |
| Boost clock speed | 2.8 GHz | 2.8 GHz |
| Bus rate | 1066 MHz | 533 MHz |
| L1 cache | 64 KB | no data |
| L2 cache | 3 MB (shared) | no data |
| L3 cache | 0 KB | no data |
| Chip lithography | 45 nm | 90 nm |
| Die size | 82 mm2 | no data |
| Maximum case temperature (TCase) | 74 °C | no data |
| Number of transistors | 228 million | no data |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Duo E7400 and Mobile Pentium 4 520 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | no data |
| Socket | LGA775 | no data |
| Power consumption (TDP) | 65 Watt | 91 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo E7400 and Mobile Pentium 4 520. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
Security technologies
Core 2 Duo E7400 and Mobile Pentium 4 520 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E7400 and Mobile Pentium 4 520. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
Pros & cons summary
| Performance score | 0.65 | 0.15 |
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 45 nm | 90 nm |
| Power consumption (TDP) | 65 Watt | 91 Watt |
Core 2 Duo E7400 has a 333.3% higher aggregate performance score, 100% more physical cores and 100% more threads, a 100% more advanced lithography process, and 40% lower power consumption.
The Core 2 Duo E7400 is our recommended choice as it beats the Mobile Pentium 4 520 in performance tests.
Note that Core 2 Duo E7400 is a desktop processor while Mobile Pentium 4 520 is a notebook one.
Should you still have questions on choice between Core 2 Duo E7400 and Mobile Pentium 4 520, ask them in Comments section, and we shall answer.
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