Celeron M 520 vs Core 2 Duo P8400
Primary details
Comparing Core 2 Duo P8400 and Celeron M 520 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2803 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core 2 Duo | Celeron M |
| Architecture codename | Penryn (2008−2011) | Merom (2006−2008) |
| Release date | 15 July 2008 (16 years ago) | no data |
| Launch price (MSRP) | $209 | no data |
Detailed specifications
Core 2 Duo P8400 and Celeron M 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 | 2.26 GHz | 1.6 GHz |
| Boost clock speed | 2.26 GHz | 1.6 GHz |
| Bus rate | 1066 MHz | 533 MHz |
| L1 cache | 128 KB | no data |
| L2 cache | 3 MB | no data |
| L3 cache | 3 MB L2 Cache | 1 MB L2 Cache |
| Chip lithography | 45 nm | 65 nm |
| Die size | 107 mm2 | no data |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | 410 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 1.05V-1.15V | 0.95V-1.3V |
Compatibility
Information on Core 2 Duo P8400 and Celeron M 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.
| Socket | BGA479,PBGA479,PGA478 | PPGA478 |
| Power consumption (TDP) | 25 Watt | 30 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo P8400 and Celeron M 520. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | - |
| Demand Based Switching | - | - |
| FSB parity | - | - |
| Status | Discontinued | Discontinued |
Security technologies
Core 2 Duo P8400 and Celeron M 520 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo P8400 and Celeron M 520 are enumerated here.
| VT-x | + | - |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 25 Watt | 30 Watt |
Core 2 Duo P8400 has 100% more physical cores and 100% more threads, a 44.4% more advanced lithography process, and 20% lower power consumption.
We couldn't decide between Core 2 Duo P8400 and Celeron M 520. We've got no test results to judge.
Should you still have questions on choice between Core 2 Duo P8400 and Celeron M 520, ask them in Comments section, and we shall answer.
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