Ryzen Embedded 8640U vs Pentium D 955
Primary details
Comparing Pentium D 955 and Ryzen Embedded 8640U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Architecture codename | Presler (2005−2007) | Hawk Point (2024) |
| Release date | January 2006 (18 years ago) | 2 April 2024 (less than a year ago) |
Detailed specifications
Pentium D 955 and Ryzen Embedded 8640U 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 | 2 (Dual-core) | 6 (Hexa-Core) |
| Threads | no data | 12 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 3.46 GHz | 4.9 GHz |
| L1 cache | 28 KB | 64 KB (per core) |
| L2 cache | 4096 KB | 1 MB (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 65 nm | 4 nm |
| Die size | 140 mm2 | 178 mm2 |
| Number of transistors | 376 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Pentium D 955 and Ryzen Embedded 8640U 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 | 775 | FP8 |
| Power consumption (TDP) | 130 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 955 and Ryzen Embedded 8640U. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 955 and Ryzen Embedded 8640U are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 955 and Ryzen Embedded 8640U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 760M |
Peripherals
Specifications and connection of peripherals supported by Pentium D 955 and Ryzen Embedded 8640U.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Physical cores | 2 | 6 |
| Chip lithography | 65 nm | 4 nm |
| Power consumption (TDP) | 130 Watt | 28 Watt |
Ryzen Embedded 8640U has 200% more physical cores, a 1525% more advanced lithography process, and 364.3% lower power consumption.
We couldn't decide between Pentium D 955 and Ryzen Embedded 8640U. We've got no test results to judge.
Note that Pentium D 955 is a desktop processor while Ryzen Embedded 8640U is a notebook one.
Should you still have questions on choice between Pentium D 955 and Ryzen Embedded 8640U, ask them in Comments section, and we shall answer.
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