Ryzen 7 PRO 7840U vs Athlon II X2 255
Aggregate performance score
Ryzen 7 PRO 7840U outperforms Athlon II X2 255 by a whopping 1949% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2927 | 581 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.02 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | 0.44 | 21.13 |
| Designer | AMD | AMD |
| Architecture codename | Regor (2009−2013) | Phoenix (Zen 4) (2023) |
| Release date | 25 January 2010 (15 years ago) | 3 May 2023 (2 years ago) |
| Launch price (MSRP) | $60 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Athlon II X2 255 and Ryzen 7 PRO 7840U 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) | 8 (Octa-Core) |
| Threads | 2 | 16 |
| Base clock speed | 3.1 GHz | 3.3 GHz |
| Boost clock speed | 3.1 GHz | 5.1 GHz |
| L1 cache | 128 KB | 512 KB |
| L2 cache | 1 MB | 8 MB |
| L3 cache | 0 KB | 16 MB |
| Chip lithography | 45 nm | 4 nm |
| Die size | 117 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 410 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Athlon II X2 255 and Ryzen 7 PRO 7840U 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 | no data |
| Socket | AM3 | no data |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Ryzen 7 PRO 7840U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M ( - 2700 MHz) |
Peripherals
Specifications and connection of peripherals supported by Athlon II X2 255 and Ryzen 7 PRO 7840U.
| PCIe version | 2.0 | no data |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
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 | 0.68 | 13.93 |
| Recency | 25 January 2010 | 3 May 2023 |
| Physical cores | 2 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 45 nm | 4 nm |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Ryzen 7 PRO 7840U has a 1948.5% higher aggregate performance score, an age advantage of 13 years, 300% more physical cores and 700% more threads, a 1025% more advanced lithography process, and 132.1% lower power consumption.
The AMD Ryzen 7 PRO 7840U is our recommended choice as it beats the AMD Athlon II X2 255 in performance tests.
Note that Athlon II X2 255 is a desktop processor while Ryzen 7 PRO 7840U is a notebook one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
