Atom x5-E3940 vs Pentium III 800
Primary details
Comparing Pentium III 800 and Atom x5-E3940 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2303 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | 5x Intel Atom |
| Power efficiency | no data | 11.67 |
| Architecture codename | Coppermine T (2000) | Apollo Lake (2014−2016) |
| Release date | no data (2024 years ago) | 30 August 2014 (10 years ago) |
Detailed specifications
Pentium III 800 and Atom x5-E3940 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) | 4 (Quad-Core) |
| Threads | no data | 4 |
| Base clock speed | no data | 1.6 GHz |
| Boost clock speed | 0.8 GHz | 1.8 GHz |
| L1 cache | 8 KB | 56K (per core) |
| L2 cache | 256 KB | 2 MB (shared) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 180 nm | 14 nm |
| Die size | 80 mm2 | no data |
| Maximum case temperature (TCase) | 69 °C | 103 °C |
| Number of transistors | 44 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium III 800 and Atom x5-E3940 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 | 1 | 1 (Uniprocessor) |
| Socket | 370 | Intel BGA 1296 |
| Power consumption (TDP) | 38 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium III 800 and Atom x5-E3940. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
Security technologies
Pentium III 800 and Atom x5-E3940 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium III 800 and Atom x5-E3940 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 800 and Atom x5-E3940. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3-1866 |
| Maximum memory size | no data | 8 GB |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel HD Graphics 500 |
Peripherals
Specifications and connection of peripherals supported by Pentium III 800 and Atom x5-E3940.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 4 |
Pros & cons summary
| Physical cores | 1 | 4 |
| Chip lithography | 180 nm | 14 nm |
| Power consumption (TDP) | 38 Watt | 10 Watt |
Atom x5-E3940 has 300% more physical cores, a 1185.7% more advanced lithography process, and 280% lower power consumption.
We couldn't decide between Pentium III 800 and Atom x5-E3940. We've got no test results to judge.
Note that Pentium III 800 is a desktop processor while Atom x5-E3940 is a notebook one.
Should you still have questions on choice between Pentium III 800 and Atom x5-E3940, ask them in Comments section, and we shall answer.
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