Athlon II X2 255 vs Phenom II X4 P920
Aggregate performance score
Phenom II X4 P920 outperforms Athlon II X2 255 by a moderate 15% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X4 P920 and Athlon II X2 255 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2562 | 2664 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.02 |
| Market segment | Laptop | Desktop processor |
| Series | 4x AMD Phenom II | no data |
| Power efficiency | 3.22 | 1.08 |
| Architecture codename | Champlain (2010−2011) | Regor (2009−2013) |
| Release date | 12 May 2010 (14 years ago) | 25 January 2010 (14 years ago) |
| Launch price (MSRP) | no data | $60 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X4 P920 and Athlon II X2 255 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | no data | 3.1 GHz |
| Boost clock speed | 1.6 GHz | 3.1 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 512 KB | 128 KB |
| L2 cache | 2 MB | 1 MB |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | no data | 117 mm2 |
| Number of transistors | no data | 410 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X4 P920 and Athlon II X2 255 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 | no data | 1 |
| Socket | S1 (S1g4) | AM3 |
| Power consumption (TDP) | 25 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 P920 and Athlon II X2 255. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow, SSE (1,2,3,4A), AMD64, Enhanced Virus Protection, Virtualization, HyperTransport 3.0 | no data |
| VirusProtect | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 P920 and Athlon II X2 255 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 P920 and Athlon II X2 255. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 P920 and Athlon II X2 255.
| PCIe version | no data | 2.0 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 0.85 | 0.74 |
| Recency | 12 May 2010 | 25 January 2010 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Power consumption (TDP) | 25 Watt | 65 Watt |
Phenom II X4 P920 has a 14.9% higher aggregate performance score, an age advantage of 3 months, 100% more physical cores and 100% more threads, and 160% lower power consumption.
The Phenom II X4 P920 is our recommended choice as it beats the Athlon II X2 255 in performance tests.
Be aware that Phenom II X4 P920 is a notebook processor while Athlon II X2 255 is a desktop one.
Should you still have questions on choice between Phenom II X4 P920 and Athlon II X2 255, ask them in Comments section, and we shall answer.
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