Pentium III 800 vs Celeron M 550
Primary details
Comparing Celeron M 550 and Pentium III 800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3120 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Celeron M | no data |
| Power efficiency | 0.91 | no data |
| Architecture codename | Merom (2006−2008) | Coppermine T (2000) |
| Release date | no data (2024 years ago) | no data (2024 years ago) |
Detailed specifications
Celeron M 550 and Pentium III 800 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 | 1 (Single-Core) | 1 (Single-Core) |
| Threads | 1 | 1 |
| Boost clock speed | 2 GHz | 0.8 GHz |
| Bus rate | 533 MHz | no data |
| L1 cache | no data | 8 KB |
| L2 cache | no data | 256 KB |
| L3 cache | no data | 0 KB |
| Chip lithography | 65 nm | 180 nm |
| Die size | no data | 80 mm2 |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | no data | 44 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron M 550 and Pentium III 800 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 | no data | 1 |
| Socket | no data | 370 |
| Power consumption (TDP) | 30 Watt | 38 Watt |
Pros & cons summary
| Chip lithography | 65 nm | 180 nm |
| Power consumption (TDP) | 30 Watt | 38 Watt |
Celeron M 550 has a 176.9% more advanced lithography process, and 26.7% lower power consumption.
We couldn't decide between Celeron M 550 and Pentium III 800. We've got no test results to judge.
Be aware that Celeron M 550 is a notebook processor while Pentium III 800 is a desktop one.
Should you still have questions on choice between Celeron M 550 and Pentium III 800, ask them in Comments section, and we shall answer.
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