Pentium D 950 vs Xeon X5650
Primary details
Comparing Xeon X5650 and Pentium D 950 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1413 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.25 | no data |
| Market segment | Server | Desktop processor |
| Architecture codename | Westmere-EP (2010−2011) | Presler (2006−2007) |
| Release date | 16 March 2010 (14 years ago) | 16 January 2006 (18 years ago) |
| Launch price (MSRP) | $53 | no data |
| Current price | $28 (0.5x MSRP) | $140 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon X5650 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 | 6 (Hexa-Core) | 2 (Dual-core) |
| Threads | 12 | 2 |
| Base clock speed | 2.66 GHz | 3.4 GHz |
| Boost clock speed | 3.06 GHz | 3.4 GHz |
| L1 cache | 64 KB (per core) | 16 KB (per core) |
| L2 cache | 256 KB (per core) | 2 MB (per die) |
| L3 cache | 12 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 65 nm |
| Die size | 239 mm2 | 2x 81 mm2 |
| Maximum core temperature | 81 °C | C1+D0=63 °C, B1=69 °C |
| Number of transistors | 1,170 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | no data | 1.2V-1.3375V |
Compatibility
Information on Xeon X5650 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 | 2 | 1 |
| Socket | FCLGA1366,LGA1366 | LGA775,PLGA775 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon X5650 and Pentium D 950. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | no data |
| AES-NI | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | - | - |
| Demand Based Switching | + | - |
| PAE | 40 Bit | 32 Bit |
| FSB parity | no data | - |
| Status | Discontinued | Discontinued |
Security technologies
Xeon X5650 and Pentium D 950 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon X5650 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 X5650 and Pentium D 950. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
| Maximum memory size | 288 GB | no data |
| Max memory channels | 3 | no data |
| Maximum memory bandwidth | 32 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 X5650 and Pentium D 950.
| PCIe version | 2.0 | 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.
Benchmark coverage: 68%
Xeon X5650 outperforms Pentium D 950 by 740% in Passmark.
Pros & cons summary
| Recency | 16 March 2010 | 16 January 2006 |
| Physical cores | 6 | 2 |
| Threads | 12 | 2 |
| Chip lithography | 32 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 130 Watt |
We couldn't decide between Xeon X5650 and Pentium D 950. We've got no test results to judge.
Be aware that Xeon X5650 is a server/workstation processor while Pentium D 950 is a desktop one.
Should you still have questions on choice between Xeon X5650 and Pentium D 950, ask them in Comments section, and we shall answer.
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