Ryzen 7 PRO 7840U vs Pentium III 1400S
Primary details
Comparing Pentium III 1400S and Ryzen 7 PRO 7840U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 441 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | no data | 52.63 |
| Architecture codename | Tualatin (2000−2002) | Phoenix (Zen 4) (2023) |
| Release date | January 2002 (22 years ago) | 3 May 2023 (1 year ago) |
Detailed specifications
Pentium III 1400S and Ryzen 7 PRO 7840U 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) | 8 (Octa-Core) |
| Threads | 1 | 16 |
| Base clock speed | no data | 3.3 GHz |
| Boost clock speed | 1.4 GHz | 5.1 GHz |
| L1 cache | 8 KB | 512 KB |
| L2 cache | 512 KB | 8 MB |
| L3 cache | 0 KB | 16 MB |
| Chip lithography | 130 nm | 4 nm |
| Die size | 80 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 44 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Pentium III 1400S and Ryzen 7 PRO 7840U 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 | no data |
| Socket | 370 | no data |
| Power consumption (TDP) | 32 Watt | 28 Watt |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Physical cores | 1 | 8 |
| Threads | 1 | 16 |
| Chip lithography | 130 nm | 4 nm |
| Power consumption (TDP) | 32 Watt | 28 Watt |
Ryzen 7 PRO 7840U has 700% more physical cores and 1500% more threads, a 3150% more advanced lithography process, and 14.3% lower power consumption.
We couldn't decide between Pentium III 1400S and Ryzen 7 PRO 7840U. We've got no test results to judge.
Note that Pentium III 1400S is a desktop processor while Ryzen 7 PRO 7840U is a notebook one.
Should you still have questions on choice between Pentium III 1400S and Ryzen 7 PRO 7840U, ask them in Comments section, and we shall answer.
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