Athlon II X4 640 vs Phenom II X2 N620
Aggregate performance score
Athlon II X4 640 outperforms Phenom II X2 N620 by an impressive 72% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X2 N620 and Athlon II X4 640 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2600 | 2214 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 2.92 |
| Market segment | Laptop | Desktop processor |
| Series | 2x AMD Phenom II | no data |
| Power efficiency | 2.22 | 1.41 |
| Architecture codename | Champlain (2010−2011) | Propus (2009−2011) |
| Release date | 12 May 2010 (14 years ago) | 11 May 2010 (14 years ago) |
| Launch price (MSRP) | no data | $80 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X2 N620 and Athlon II X4 640 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 | no data | 3 GHz |
| Boost clock speed | 2.8 GHz | 3 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 256 KB | 128 KB (per core) |
| L2 cache | 2 MB | 512 KB (per core) |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | no data | 169 mm2 |
| Number of transistors | no data | 300 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X2 N620 and Athlon II X4 640 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 | AM3 |
| Power consumption (TDP) | 35 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X2 N620 and Athlon II X4 640. You'll probably need this information if you require some particular technology.
| Instruction set extensions | HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization | no data |
| VirusProtect | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X2 N620 and Athlon II X4 640. 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 X2 N620 and Athlon II X4 640.
| 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 | 0.82 | 1.41 |
| Physical cores | 2 | 4 |
| Threads | 2 | 4 |
| Power consumption (TDP) | 35 Watt | 95 Watt |
Phenom II X2 N620 has 171.4% lower power consumption.
Athlon II X4 640, on the other hand, has a 72% higher aggregate performance score, and 100% more physical cores and 100% more threads.
The Athlon II X4 640 is our recommended choice as it beats the Phenom II X2 N620 in performance tests.
Be aware that Phenom II X2 N620 is a notebook processor while Athlon II X4 640 is a desktop one.
Should you still have questions on choice between Phenom II X2 N620 and Athlon II X4 640, 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.
