Ryzen 9 9950X vs Pentium Extreme Edition 955
Primary details
Comparing Pentium Extreme Edition 955 and Ryzen 9 9950X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 58 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 61.35 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 23.25 |
| Architecture codename | Presler (2005−2007) | Granite Ridge (2024) |
| Release date | 27 December 2005 (18 years ago) | 15 August 2024 (less than a year ago) |
| Launch price (MSRP) | $999 | $649 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Pentium Extreme Edition 955 and Ryzen 9 9950X 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) | 16 (Hexadeca-Core) |
| Threads | 4 | 32 |
| Base clock speed | 3.466 GHz | 4.3 GHz |
| Boost clock speed | 0.47 GHz | 5.7 GHz |
| L1 cache | 16 KB (per core) | 80 KB (per core) |
| L2 cache | 2 MB (per core) | 1 MB (per core) |
| L3 cache | no data | 64 MB (shared) |
| Chip lithography | 65 nm | 4 nm |
| Die size | 2x 81 mm2 | 2x 70.6 mm2 |
| Maximum core temperature | no data | 95 °C |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 376 million | 16,630 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Pentium Extreme Edition 955 and Ryzen 9 9950X 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 | 775 | AM5 |
| Power consumption (TDP) | 130 Watt | 170 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium Extreme Edition 955 and Ryzen 9 9950X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A |
| AES-NI | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium Extreme Edition 955 and Ryzen 9 9950X are enumerated here.
| AMD-V | - | + |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium Extreme Edition 955 and Ryzen 9 9950X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 Depends on motherboard | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by Pentium Extreme Edition 955 and Ryzen 9 9950X.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 24 |
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 | 27 December 2005 | 15 August 2024 |
| Physical cores | 2 | 16 |
| Threads | 4 | 32 |
| Chip lithography | 65 nm | 4 nm |
| Power consumption (TDP) | 130 Watt | 170 Watt |
Pentium Extreme Edition 955 has 30.8% lower power consumption.
Ryzen 9 9950X, on the other hand, has an age advantage of 18 years, 700% more physical cores and 700% more threads, and a 1525% more advanced lithography process.
We couldn't decide between Pentium Extreme Edition 955 and Ryzen 9 9950X. We've got no test results to judge.
Should you still have questions on choice between Pentium Extreme Edition 955 and Ryzen 9 9950X, ask them in Comments section, and we shall answer.
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