Pentium D 950 vs Xeon D-1520
Primary details
Comparing Xeon D-1520 and Pentium D 950 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1621 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.75 | no data |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon D | no data |
| Power efficiency | 6.52 | no data |
| Architecture codename | Broadwell (2015−2019) | Presler (2005−2007) |
| Release date | 9 March 2015 (9 years ago) | 16 January 2006 (18 years ago) |
| Launch price (MSRP) | $199 | $637 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon D-1520 and Pentium D 950 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 8 | 2 |
| Base clock speed | 2.2 GHz | 3.4 GHz |
| Boost clock speed | 2.6 GHz | 3.4 GHz |
| Bus type | DMI 2.0 | no data |
| Multiplier | 22 | no data |
| L1 cache | 64K (per core) | 16 KB (per core) |
| L2 cache | 256K (per core) | 2 MB (per die) |
| L3 cache | 1.5 MB (per core) | 0 KB |
| Chip lithography | 14 nm | 65 nm |
| Die size | 246.24 mm2 | 2x 81 mm2 |
| Maximum core temperature | no data | C1+D0=63 °C, B1=69 °C |
| Maximum case temperature (TCase) | 80 °C | no data |
| Number of transistors | 3,200 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 1.2V-1.3375V |
Compatibility
Information on Xeon D-1520 and Pentium D 950 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 (Uniprocessor) | 1 |
| Socket | FCBGA1667 | LGA775,PLGA775 |
| Power consumption (TDP) | 45 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon D-1520 and Pentium D 950. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
| GPIO | + | no data |
| FSB parity | no data | - |
Security technologies
Xeon D-1520 and Pentium D 950 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon D-1520 and Pentium D 950 are enumerated here.
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon D-1520 and Pentium D 950. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR1, DDR2, DDR3 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 34.124 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Xeon D-1520 and Pentium D 950.
| PCIe version | 2.0/3.0 | no data |
| PCI Express lanes | 24 | no data |
| USB revision | 2.0/3.0 | no data |
| Total number of SATA ports | 6 | no data |
| Number of USB ports | 8 | no data |
| Integrated LAN | + | no data |
| UART | + | 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
| Recency | 9 March 2015 | 16 January 2006 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Chip lithography | 14 nm | 65 nm |
| Power consumption (TDP) | 45 Watt | 130 Watt |
Xeon D-1520 has an age advantage of 9 years, 100% more physical cores and 300% more threads, a 364.3% more advanced lithography process, and 188.9% lower power consumption.
We couldn't decide between Xeon D-1520 and Pentium D 950. We've got no test results to judge.
Be aware that Xeon D-1520 is a server/workstation processor while Pentium D 950 is a desktop one.
Should you still have questions on choice between Xeon D-1520 and Pentium D 950, ask them in Comments section, and we shall answer.
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