Pentium III 866: specs and benchmarks
Summary
Intel started Pentium III 866 sales 20 March 2000. Based on a Coppermine T architecture, this desktop processor is primarily aimed at home systems. It has 1 core and 1 thread, and is based on 180 nm manufacturing technology, with a maximum frequency of 866 MHz and a locked multiplier.
Compatibility-wise, this is Intel Socket 370 processor with a TDP of 27 Watt and a maximum temperature of 80 °C.
Primary details
Pentium III 866 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Market segment | Desktop processor | |
| Architecture codename | Coppermine T (2000) | |
| Release date | 20 March 2000 (24 years ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 1 (Single-Core) | |
| Threads | 1 | |
| Boost clock speed | 0.87 GHz | of 50 MHz (i486DX-50) |
| L1 cache | 32 KB | of 80 KB (EPYC 9965) |
| L2 cache | 256 KB | |
| L3 cache | 0 KB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 180 nm | of 3 nm (Core Ultra 9 285K) |
| Die size | 106 mm2 | |
| Maximum case temperature (TCase) | 80 °C | of 105 °C (Core i7-5950HQ) |
| Number of transistors | 28 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | - | |
| Windows 11 compatibility | - |
Compatibility
Information on Pentium III 866 compatibility with other computer components and devices: 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 | of 8 (Xeon Platinum 8454H) |
| Socket | 370 | |
| Power consumption (TDP) | 27 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Graphics specifications
General parameters of a GPU integrated into Pentium III 866.
| Integrated graphics card | On certain motherboards (Chipset feature) |
Benchmark performance
Single-core and multi-core benchmark results of Pentium III 866. Overall benchmark performance is measured in points in 0-100 range, higher is better.
We have no data on Pentium III 866 benchmark results.
Send your test results of Pentium III 866.
Recommended GPUs
People consider these graphics cards to be good for Pentium III 866, according to our PC configuration statistics.
These are the fastest graphics cards for Pentium III 866 in our user configuration statistics. There is a total of 22 configurations using Pentium III 866 in our database.
