Pentium 4 HT 521 vs Xeon E5-2686 v4
Primary details
Comparing Xeon E5-2686 v4 and Pentium 4 HT 521 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 595 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon E5 | no data |
| Power efficiency | 8.33 | no data |
| Architecture codename | Broadwell (2015−2019) | Prescott (2001−2005) |
| Release date | 20 June 2016 (8 years ago) | June 2005 (19 years ago) |
Detailed specifications
Xeon E5-2686 v4 and Pentium 4 HT 521 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 | 18 (Octadeca-Core) | 1 (Single-Core) |
| Threads | 36 | 2 |
| Base clock speed | 2.3 GHz | no data |
| Boost clock speed | 3 GHz | 2.8 GHz |
| Bus type | QPI | no data |
| Bus rate | 2 × 9.6 GT/s | no data |
| Multiplier | 23 | no data |
| L1 cache | no data | 16 KB |
| L2 cache | 4.5 MB | 1 MB |
| L3 cache | 45 MB | 0 KB |
| Chip lithography | 14 nm | 90 nm |
| Die size | 456.12 mm2 | 109 mm2 |
| Number of transistors | 7200 Million | 125 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5-2686 v4 and Pentium 4 HT 521 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 | 2 (Multiprocessor) | 1 |
| Socket | no data | 775 |
| Power consumption (TDP) | 145 Watt | 84 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2686 v4 and Pentium 4 HT 521. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| TSX | + | - |
Security technologies
Xeon E5-2686 v4 and Pentium 4 HT 521 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2686 v4 and Pentium 4 HT 521. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR1, DDR2, DDR3 |
| Maximum memory size | 1,536 GB | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2686 v4 and Pentium 4 HT 521.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 40 | no data |
Pros & cons summary
| Physical cores | 18 | 1 |
| Threads | 36 | 2 |
| Chip lithography | 14 nm | 90 nm |
| Power consumption (TDP) | 145 Watt | 84 Watt |
Xeon E5-2686 v4 has 1700% more physical cores and 1700% more threads, and a 542.9% more advanced lithography process.
Pentium 4 HT 521, on the other hand, has 72.6% lower power consumption.
We couldn't decide between Xeon E5-2686 v4 and Pentium 4 HT 521. We've got no test results to judge.
Be aware that Xeon E5-2686 v4 is a server/workstation processor while Pentium 4 HT 521 is a desktop one.
Should you still have questions on choice between Xeon E5-2686 v4 and Pentium 4 HT 521, ask them in Comments section, and we shall answer.
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