Pentium 4 HT 640 vs Pentium 4 HT 531
Primary details
Comparing Pentium 4 HT 531 and Pentium 4 HT 640 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Prescott (2001−2005) | Prescott (2001−2005) |
| Release date | June 2005 (19 years ago) | February 2005 (19 years ago) |
Detailed specifications
Pentium 4 HT 531 and Pentium 4 HT 640 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 | 2 | 2 |
| Boost clock speed | 3 GHz | 3.2 GHz |
| L1 cache | 16 KB | 28 KB |
| L2 cache | 1 MB | 2 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 90 nm |
| Die size | 109 mm2 | 109 mm2 |
| Number of transistors | 125 million | 169 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium 4 HT 531 and Pentium 4 HT 640 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 | 775 | 775 |
| Power consumption (TDP) | 84 Watt | 84 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium 4 HT 531 and Pentium 4 HT 640. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR1, DDR2, DDR3 |
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