Mobile Pentium II 366 vs Pentium III 866
Primary details
Comparing Pentium III 866 and Mobile Pentium II 366 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 | Desktop processor | Laptop |
| Series | no data | Intel Mobile Pentium II |
| Architecture codename | Coppermine T (2000) | P6 |
| Release date | 20 March 2000 (24 years ago) | no data (2024 years ago) |
Detailed specifications
Pentium III 866 and Mobile Pentium II 366 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 | 0.87 GHz | 0.37 GHz |
| Bus type | no data | FSB |
| Multiplier | no data | 5.5 |
| L1 cache | 32 KB | no data |
| L2 cache | 256 KB | 256 KB |
| L3 cache | 0 KB | no data |
| Chip lithography | 180 nm | 250 nm |
| Die size | 106 mm2 | 180 mm2 |
| Maximum case temperature (TCase) | 80 °C | no data |
| Number of transistors | 28 million | 27 Million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Pentium III 866 and Mobile Pentium II 366 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 | 2 | no data |
| Socket | 370 | no data |
| Power consumption (TDP) | 27 Watt | 13.1 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 866 and Mobile Pentium II 366. Depending on the motherboard, higher memory frequencies may be supported.
| Maximum memory size | no data | 64 GB |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Pros & cons summary
| Chip lithography | 180 nm | 250 nm |
| Power consumption (TDP) | 27 Watt | 13 Watt |
Pentium III 866 has a 38.9% more advanced lithography process.
Mobile Pentium II 366, on the other hand, has 107.7% lower power consumption.
We couldn't decide between Pentium III 866 and Mobile Pentium II 366. We've got no test results to judge.
Note that Pentium III 866 is a desktop processor while Mobile Pentium II 366 is a notebook one.
Should you still have questions on choice between Pentium III 866 and Mobile Pentium II 366, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
