Pentium D 950 vs Athlon X4 840
Primary details
Comparing Athlon X4 840 and Pentium D 950 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1827 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Series | 4x Athlon | no data |
| Architecture codename | Kaveri (2014−2015) | Presler (2005−2007) |
| Release date | August 2014 (10 years ago) | 16 January 2006 (18 years ago) |
Detailed specifications
Athlon X4 840 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 | 4 | 2 |
| Base clock speed | 3.1 GHz | 3.4 GHz |
| Boost clock speed | 3.8 GHz | 3.4 GHz |
| L1 cache | 256K | 16 KB (per core) |
| L2 cache | 4 MB | 2 MB (per die) |
| L3 cache | no data | 0 KB |
| Chip lithography | 28 nm | 65 nm |
| Die size | 245 mm2 | 2x 81 mm2 |
| Maximum core temperature | no data | C1+D0=63 °C, B1=69 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 1.2V-1.3375V |
Compatibility
Information on Athlon X4 840 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 | 1 |
| Socket | Socket FM2+ | LGA775,PLGA775 |
| Power consumption (TDP) | 65 watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon X4 840 and Pentium D 950. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
| FSB parity | no data | - |
| Status | no data | Discontinued |
Security technologies
Athlon X4 840 and Pentium D 950 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon X4 840 and Pentium D 950 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon X4 840 and Pentium D 950. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
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 Athlon X4 840 and Pentium D 950.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | 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 | on August 2014 | 16 January 2006 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 28 nm | 65 nm |
| Power consumption (TDP) | 65 Watt | 130 Watt |
Athlon X4 840 has an age advantage of 8 years, 100% more physical cores and 100% more threads, a 132.1% more advanced lithography process, and 100% lower power consumption.
We couldn't decide between Athlon X4 840 and Pentium D 950. We've got no test results to judge.
Should you still have questions on choice between Athlon X4 840 and Pentium D 950, ask them in Comments section, and we shall answer.
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