Pentium D 965 EE vs Pentium 4 HT 521
Primary details
Comparing Pentium 4 HT 521 and Pentium D 965 EE 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 | Prescott (2001−2005) | Presler (2005−2007) |
| Release date | June 2005 (19 years ago) | March 2006 (18 years ago) |
Detailed specifications
Pentium 4 HT 521 and Pentium D 965 EE 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) | 2 (Dual-core) |
| Threads | 2 | 4 |
| Boost clock speed | 2.8 GHz | 3.73 GHz |
| L1 cache | 16 KB | 28 KB |
| L2 cache | 1 MB | 4 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 65 nm |
| Die size | 109 mm2 | 140 mm2 |
| Number of transistors | 125 million | 376 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium 4 HT 521 and Pentium D 965 EE 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 | 2 |
| Socket | 775 | 775 |
| Power consumption (TDP) | 84 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium 4 HT 521 and Pentium D 965 EE. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium 4 HT 521 and Pentium D 965 EE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR1, DDR2, DDR3 |
Pros & cons summary
| Physical cores | 1 | 2 |
| Threads | 2 | 4 |
| Chip lithography | 90 nm | 65 nm |
| Power consumption (TDP) | 84 Watt | 130 Watt |
Pentium 4 HT 521 has 54.8% lower power consumption.
Pentium D 965 EE, on the other hand, has 100% more physical cores and 100% more threads, and a 38.5% more advanced lithography process.
We couldn't decide between Pentium 4 HT 521 and Pentium D 965 EE. We've got no test results to judge.
Should you still have questions on choice between Pentium 4 HT 521 and Pentium D 965 EE, ask them in Comments section, and we shall answer.
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