Ryzen 7 PRO 7840U vs Pentium III 1400
Aggregate performance score
Ryzen 7 PRO 7840U outperforms Pentium III 1400 by a whopping 12883% based on our aggregate benchmark results.
Primary details
Comparing Pentium III 1400 and Ryzen 7 PRO 7840U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3348 | 440 |
| 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 | 0.37 | 52.66 |
| Architecture codename | Tualatin (2000−2002) | Phoenix (Zen 4) (2023) |
| Release date | December 2001 (23 years ago) | 3 May 2023 (1 year ago) |
Detailed specifications
Pentium III 1400 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 | 256 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 1400 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) | 31 Watt | 28 Watt |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M ( - 2700 MHz) |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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
| Performance score | 0.12 | 15.58 |
| Physical cores | 1 | 8 |
| Threads | 1 | 16 |
| Chip lithography | 130 nm | 4 nm |
| Power consumption (TDP) | 31 Watt | 28 Watt |
Ryzen 7 PRO 7840U has a 12883.3% higher aggregate performance score, 700% more physical cores and 1500% more threads, a 3150% more advanced lithography process, and 10.7% lower power consumption.
The Ryzen 7 PRO 7840U is our recommended choice as it beats the Pentium III 1400 in performance tests.
Note that Pentium III 1400 is a desktop processor while Ryzen 7 PRO 7840U is a notebook one.
Should you still have questions on choice between Pentium III 1400 and Ryzen 7 PRO 7840U, ask them in Comments section, and we shall answer.
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