Atom Z560 vs Pentium III 866
Primary details
Comparing Pentium III 866 and Atom Z560 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 Atom |
| Architecture codename | Coppermine T (2000) | Silverthorne (2008−2010) |
| Release date | 20 March 2000 (24 years ago) | 1 June 2010 (14 years ago) |
Detailed specifications
Pentium III 866 and Atom Z560 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 | 2 |
| Base clock speed | no data | 2.13 GHz |
| Boost clock speed | 0.87 GHz | 0.13 GHz |
| Bus type | no data | FSB |
| Bus rate | no data | 533.33 MT/s |
| Multiplier | no data | 16 |
| L1 cache | 32 KB | 64K (per core) |
| L2 cache | 256 KB | 512K (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 180 nm | 45 nm |
| Die size | 106 mm2 | 26 mm2 |
| Maximum core temperature | no data | 90 °C |
| Maximum case temperature (TCase) | 80 °C | no data |
| Number of transistors | 28 million | 47 million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 0.75V-1.1V |
Compatibility
Information on Pentium III 866 and Atom Z560 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 | 1 (Uniprocessor) |
| Socket | 370 | PBGA441 |
| Power consumption (TDP) | 27 Watt | 2.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium III 866 and Atom Z560. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | + |
| FSB parity | no data | - |
Security technologies
Pentium III 866 and Atom Z560 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium III 866 and Atom Z560 are enumerated here.
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 866 and Atom Z560. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | unknown |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | - |
Pros & cons summary
| Recency | 20 March 2000 | 1 June 2010 |
| Threads | 1 | 2 |
| Chip lithography | 180 nm | 45 nm |
| Power consumption (TDP) | 27 Watt | 2 Watt |
Atom Z560 has an age advantage of 10 years, 100% more threads, a 300% more advanced lithography process, and 1250% lower power consumption.
We couldn't decide between Pentium III 866 and Atom Z560. We've got no test results to judge.
Note that Pentium III 866 is a desktop processor while Atom Z560 is a notebook one.
Should you still have questions on choice between Pentium III 866 and Atom Z560, ask them in Comments section, and we shall answer.
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