Phenom II X4 955 (125W) vs Ryzen 5 4500U
Primary details
Comparing Ryzen 5 4500U and Phenom II X4 955 (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 989 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Renoir (Ryzen 4000 APU) | no data |
| Architecture codename | Renoir-U (Zen 2) (2020−2021) | Deneb (2009−2011) |
| Release date | 6 January 2020 (4 years ago) | 1 April 2009 (15 years ago) |
Detailed specifications
Ryzen 5 4500U and Phenom II X4 955 (125W) 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) | 4 (Quad-Core) |
| Threads | 6 | 4 |
| Base clock speed | 2.3 GHz | 3.2 GHz |
| Boost clock speed | 4 GHz | 3.2 GHz |
| Multiplier | 23 | no data |
| L1 cache | 384 KB | 128 KB (per core) |
| L2 cache | 3 MB | 512 KB (per core) |
| L3 cache | 8 MB | 6 MB (shared) |
| Chip lithography | 7 nm | 45 nm |
| Die size | 156 mm2 | 258 mm2 |
| Maximum core temperature | 105 °C | no data |
| Number of transistors | 9800 Million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
Compatibility
Information on Ryzen 5 4500U and Phenom II X4 955 (125W) 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 | FP6 | AM3 |
| Power consumption (TDP) | 15 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 4500U and Phenom II X4 955 (125W). You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | no data |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 4500U and Phenom II X4 955 (125W) are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 4500U and Phenom II X4 955 (125W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR3 |
| Maximum memory size | 64 GB | no data |
| Maximum memory bandwidth | 68.27 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon RX Vega 6 (Ryzen 4000/5000) | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 4500U and Phenom II X4 955 (125W).
| PCIe version | 3.0 | 2.0 |
Pros & cons summary
| Recency | 6 January 2020 | 1 April 2009 |
| Physical cores | 6 | 4 |
| Threads | 6 | 4 |
| Chip lithography | 7 nm | 45 nm |
| Power consumption (TDP) | 15 Watt | 125 Watt |
Ryzen 5 4500U has an age advantage of 10 years, 50% more physical cores and 50% more threads, a 542.9% more advanced lithography process, and 733.3% lower power consumption.
We couldn't decide between Ryzen 5 4500U and Phenom II X4 955 (125W). We've got no test results to judge.
Be aware that Ryzen 5 4500U is a notebook processor while Phenom II X4 955 (125W) is a desktop one.
Should you still have questions on choice between Ryzen 5 4500U and Phenom II X4 955 (125W), ask them in Comments section, and we shall answer.
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