Phenom II X2 N660 vs Athlon II X4 645
Primary details
Comparing Athlon II X4 645 and Phenom II X2 N660 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2148 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.30 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | 2x AMD Phenom II |
| Power efficiency | 1.47 | no data |
| Architecture codename | Propus (2009−2011) | Champlain (2010−2011) |
| Release date | 21 September 2010 (14 years ago) | 1 January 2011 (13 years ago) |
| Launch price (MSRP) | $80 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X4 645 and Phenom II X2 N660 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 | 3.1 GHz | no data |
| Boost clock speed | 3.1 GHz | 3 GHz |
| Bus rate | no data | 3600 MHz |
| L1 cache | 128 KB (per core) | 256 KB |
| L2 cache | 512 KB (per core) | 2 MB |
| L3 cache | 0 KB | no data |
| Chip lithography | 45 nm | 45 nm |
| Die size | 169 mm2 | no data |
| Number of transistors | 300 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon II X4 645 and Phenom II X2 N660 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 | S1 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 645 and Phenom II X2 N660. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization |
| VirusProtect | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 645 and Phenom II X2 N660. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 645 and Phenom II X2 N660.
| PCIe version | 2.0 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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
| Recency | 21 September 2010 | 1 January 2011 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Athlon II X4 645 has 100% more physical cores and 100% more threads.
Phenom II X2 N660, on the other hand, has an age advantage of 3 months, and 171.4% lower power consumption.
We couldn't decide between Athlon II X4 645 and Phenom II X2 N660. We've got no test results to judge.
Note that Athlon II X4 645 is a desktop processor while Phenom II X2 N660 is a notebook one.
Should you still have questions on choice between Athlon II X4 645 and Phenom II X2 N660, 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.
