Phenom II X4 955 (125W) vs A9-9420
Primary details
Comparing A9-9420 and Phenom II X4 955 (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2502 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Bristol Ridge | no data |
| Power efficiency | 5.96 | no data |
| Architecture codename | Stoney Ridge (2016−2019) | Deneb (2009−2011) |
| Release date | 31 May 2016 (8 years ago) | 1 April 2009 (15 years ago) |
Detailed specifications
A9-9420 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 | 2 (Dual-core) | 4 (Quad-Core) |
| Threads | 2 | 4 |
| Base clock speed | 3 GHz | 3.2 GHz |
| Boost clock speed | 3.6 GHz | 3.2 GHz |
| L1 cache | 160 KB | 128 KB (per core) |
| L2 cache | 1 MB (shared) | 512 KB (per core) |
| L3 cache | no data | 6 MB (shared) |
| Chip lithography | 28 nm | 45 nm |
| Die size | 125 mm2 | 258 mm2 |
| Maximum core temperature | 90 °C | no data |
| Maximum case temperature (TCase) | 74 °C | no data |
| Number of transistors | 1,200 million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on A9-9420 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 | FT4 | AM3 |
| Power consumption (TDP) | 15 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A9-9420 and Phenom II X4 955 (125W). You'll probably need this information if you require some particular technology.
| Instruction set extensions | Virtualization, | no data |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by A9-9420 and Phenom II X4 955 (125W) are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A9-9420 and Phenom II X4 955 (125W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Radeon R5 | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by A9-9420 and Phenom II X4 955 (125W).
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 8 | no data |
Pros & cons summary
| Recency | 31 May 2016 | 1 April 2009 |
| Physical cores | 2 | 4 |
| Threads | 2 | 4 |
| Chip lithography | 28 nm | 45 nm |
| Power consumption (TDP) | 15 Watt | 125 Watt |
A9-9420 has an age advantage of 7 years, a 60.7% more advanced lithography process, and 733.3% lower power consumption.
Phenom II X4 955 (125W), on the other hand, has 100% more physical cores and 100% more threads.
We couldn't decide between A9-9420 and Phenom II X4 955 (125W). We've got no test results to judge.
Be aware that A9-9420 is a notebook processor while Phenom II X4 955 (125W) is a desktop one.
Should you still have questions on choice between A9-9420 and Phenom II X4 955 (125W), ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
