Pentium III 1400 vs Xeon L5420
Primary details
Comparing Xeon L5420 and Pentium III 1400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2237 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Power efficiency | 2.55 | no data |
| Architecture codename | no data | Tualatin (2000−2002) |
| Release date | 1 January 2008 (16 years ago) | December 2001 (22 years ago) |
Detailed specifications
Xeon L5420 and Pentium III 1400 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 | no data | 1 (Single-Core) |
| Threads | no data | 1 |
| Base clock speed | 2.5 GHz | no data |
| Boost clock speed | no data | 1.4 GHz |
| L1 cache | no data | 8 KB |
| L2 cache | no data | 256 KB |
| L3 cache | 12 MB L2 Cache | 0 KB |
| Chip lithography | 45 nm | 130 nm |
| Die size | no data | 80 mm2 |
| Maximum core temperature | 57 °C | no data |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | no data | 44 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.35V | no data |
Compatibility
Information on Xeon L5420 and Pentium III 1400 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 | no data | 1 |
| Socket | LGA771 | 370 |
| Power consumption (TDP) | 50 Watt | 31 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon L5420 and Pentium III 1400. You'll probably need this information if you require some particular technology.
| 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
Xeon L5420 and Pentium III 1400 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 Xeon L5420 and Pentium III 1400 are enumerated here.
| VT-x | + | no data |
| EPT | - | no data |
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
| Chip lithography | 45 nm | 130 nm |
| Power consumption (TDP) | 50 Watt | 31 Watt |
Xeon L5420 has a 188.9% more advanced lithography process.
Pentium III 1400, on the other hand, has 61.3% lower power consumption.
We couldn't decide between Xeon L5420 and Pentium III 1400. We've got no test results to judge.
Be aware that Xeon L5420 is a server/workstation processor while Pentium III 1400 is a desktop one.
Should you still have questions on choice between Xeon L5420 and Pentium III 1400, ask them in Comments section, and we shall answer.
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