Pentium D 955 vs Ryzen 9 3900
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 418 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 17.00 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | AMD Matisse (Ryzen 3000 Desktop) | no data |
| Power efficiency | 28.58 | no data |
| Designer | AMD | Intel |
| Manufacturer | TSMC | no data |
| Architecture codename | Matisse (Zen 2) (2019−2020) | Presler (2005−2007) |
| Release date | 24 September 2019 (6 years ago) | January 2006 (19 years ago) |
| Launch price (MSRP) | $499 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Ryzen 9 3900 and Pentium D 955 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 | 12 (Dodeca-Core) | 2 (Dual-core) |
| Threads | 24 | no data |
| Base clock speed | 3.1 GHz | no data |
| Boost clock speed | 4.3 GHz | 3.46 GHz |
| L1 cache | 64 KB (per core) | 28 KB |
| L2 cache | 512 KB (per core) | 4096 KB |
| L3 cache | 64 MB | 0 KB |
| Chip lithography | 7 nm, 12 nm | 65 nm |
| Die size | 2x 74 mm2 | 140 mm2 |
| Number of transistors | 7,600 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 3900 and Pentium D 955 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 | 2 |
| Socket | AM4 | 775 |
| Power consumption (TDP) | 65 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 3900 and Pentium D 955. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2 | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Precision Boost 2 | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 3900 and Pentium D 955 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900 and Pentium D 955. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR1, DDR2, DDR3 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 51.196 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 3900 and Pentium D 955.
| PCIe version | 4.0 | no data |
| PCI Express lanes | 24 | no data |
Pros & cons summary
| Physical cores | 12 | 2 |
| Chip lithography | 7 nm | 65 nm |
| Power consumption (TDP) | 65 Watt | 130 Watt |
Ryzen 9 3900 has 500% more physical cores, a 828.6% more advanced lithography process, and 100% lower power consumption.
We couldn't decide between AMD Ryzen 9 3900 and Intel Pentium D 955. We've got no test results to judge.
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