Pentium 4 HT 541 vs Pentium III 1266S
Primary Details
Comparing Pentium III 1266S and Pentium 4 HT 541 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 | Tualatin (2000−2002) | Prescott (2001−2005) |
| Release date | July 2001 (22 years ago) | June 2005 (18 years ago) |
Detailed Specifications
Pentium III 1266S and Pentium 4 HT 541 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) | 1 (Single-Core) |
| Threads | 1 | 2 |
| Boost clock speed | 1.27 GHz | 3.2 GHz |
| L1 cache | 8 KB | 16 KB |
| L2 cache | 512 KB | 1 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 130 nm | 90 nm |
| Die size | 80 mm2 | 109 mm2 |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 44 million | 125 million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Pentium III 1266S and Pentium 4 HT 541 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 |
| Socket | 370 | 775 |
| Power consumption (TDP) | 30 Watt | 84 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 1266S and Pentium 4 HT 541. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR1, DDR2, DDR3 |
Pros & Cons Summary
| Threads | 1 | 2 |
| Chip lithography | 130 nm | 90 nm |
| Power consumption (TDP) | 30 Watt | 84 Watt |
We couldn't decide between Pentium III 1266S and Pentium 4 HT 541. We've got no test results to judge.
Should you still have questions on choice between Pentium III 1266S and Pentium 4 HT 541, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
