Athlon II X2 250u vs Athlon II X2 255
Aggregate performance score
Athlon II X2 255 outperforms Athlon II X2 250u by an impressive 95% based on our aggregate benchmark results.
Primary details
Comparing Athlon II X2 255 and Athlon II X2 250u processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2680 | 3033 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.02 | no data |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 1.08 | 1.44 |
| Architecture codename | Regor (2009−2013) | Regor (2009−2013) |
| Release date | 25 January 2010 (14 years ago) | 20 October 2009 (15 years ago) |
| Launch price (MSRP) | $60 | $35 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X2 255 and Athlon II X2 250u 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 3.1 GHz | no data |
| Boost clock speed | 3.1 GHz | 1.6 GHz |
| L1 cache | 128 KB | 128 KB |
| L2 cache | 1 MB | 1 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 117 mm2 | 117 mm2 |
| Number of transistors | 410 million | 410 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon II X2 255 and Athlon II X2 250u 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 | AM3 | AM3 |
| Power consumption (TDP) | 65 Watt | 25 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Athlon II X2 250u. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Athlon II X2 255 and Athlon II X2 250u.
| PCIe version | 2.0 | 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.
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
| Performance score | 0.74 | 0.38 |
| Recency | 25 January 2010 | 20 October 2009 |
| Power consumption (TDP) | 65 Watt | 25 Watt |
Athlon II X2 255 has a 94.7% higher aggregate performance score, and an age advantage of 3 months.
Athlon II X2 250u, on the other hand, has 160% lower power consumption.
The Athlon II X2 255 is our recommended choice as it beats the Athlon II X2 250u in performance tests.
Should you still have questions on choice between Athlon II X2 255 and Athlon II X2 250u, ask them in Comments section, and we shall answer.
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