Pentium III 800 vs Pentium D 840 EE
Primary details
Comparing Pentium D 840 EE and Pentium III 800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Smithfield (2005) | Coppermine T (2000) |
| Release date | May 2005 (19 years ago) | no data |
Detailed specifications
Pentium D 840 EE 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 | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 4 | no data |
| Boost clock speed | 3.2 GHz | 0.8 GHz |
| L1 cache | 28 KB | 8 KB |
| L2 cache | 2 MB | 256 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 180 nm |
| Die size | 206 mm2 | 80 mm2 |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 169 million | 44 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium D 840 EE 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 | 2 | 1 |
| Socket | 775 | 370 |
| Power consumption (TDP) | 130 Watt | 38 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 840 EE and Pentium III 800. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 840 EE and Pentium III 800. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
Pros & cons summary
| Physical cores | 2 | 1 |
| Chip lithography | 90 nm | 180 nm |
| Power consumption (TDP) | 130 Watt | 38 Watt |
Pentium D 840 EE has 100% more physical cores, and a 100% more advanced lithography process.
Pentium III 800, on the other hand, has 242.1% lower power consumption.
We couldn't decide between Pentium D 840 EE and Pentium III 800. We've got no test results to judge.
Should you still have questions on choice between Pentium D 840 EE and Pentium III 800, ask them in Comments section, and we shall answer.
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