Pentium III 800 vs Celeron M 900
Primary details
Comparing Celeron M 900 and Pentium III 800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Celeron M | no data |
| Architecture codename | Penryn (2008−2011) | Coppermine T (2000) |
| Release date | 1 April 2009 (15 years ago) | no data (2024 years ago) |
| Launch price (MSRP) | $70 | no data |
Detailed specifications
Celeron M 900 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 | no data |
| Boost clock speed | 2.2 GHz | 0.8 GHz |
| Bus rate | 800 MHz | no data |
| L1 cache | no data | 8 KB |
| L2 cache | 1 MB | 256 KB |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 180 nm |
| Die size | 107 mm2 | 80 mm2 |
| Maximum core temperature | 105 °C | no data |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 410 Million | 44 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron M 900 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 | PGA478 | 370 |
| Power consumption (TDP) | 35 Watt | 38 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron M 900 and Pentium III 800. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | no data |
Pros & cons summary
| Chip lithography | 45 nm | 180 nm |
| Power consumption (TDP) | 35 Watt | 38 Watt |
Celeron M 900 has a 300% more advanced lithography process, and 8.6% lower power consumption.
We couldn't decide between Celeron M 900 and Pentium III 800. We've got no test results to judge.
Be aware that Celeron M 900 is a notebook processor while Pentium III 800 is a desktop one.
Should you still have questions on choice between Celeron M 900 and Pentium III 800, ask them in Comments section, and we shall answer.
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