A8-7680 vs Athlon II X4 645
Aggregate performance score
A8-7680 outperforms Athlon II X4 645 by an impressive 51% based on our aggregate benchmark results.
Primary details
Comparing Athlon II X4 645 and A8-7680 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2116 | 1795 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.30 | 15.78 |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | AMD A8 |
| Architecture codename | Propus (2009−2011) | Excavator (2017−2018) |
| Release date | 21 September 2010 (13 years ago) | 29 October 2018 (5 years ago) |
| Launch price (MSRP) | $80 | $56 |
Cost-effectiveness evaluation
Performance per price, higher is better.
A8-7680 has 378% better value for money than Athlon II X4 645.
Detailed specifications
Athlon II X4 645 and A8-7680 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) | 4 (Quad-Core) |
| Threads | 4 | 4 |
| Base clock speed | 3.1 GHz | 3.5 GHz |
| Boost clock speed | 3.1 GHz | 3.4 GHz |
| Multiplier | no data | 38 |
| L1 cache | 128 KB (per core) | 160 KB |
| L2 cache | 512 KB (per core) | 1 MB (per core) |
| L3 cache | 0 KB | no data |
| Chip lithography | 45 nm | 28 nm |
| Die size | 169 mm2 | 246 mm2 |
| Maximum case temperature (TCase) | no data | 74 °C |
| Number of transistors | 300 million | 1,178 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon II X4 645 and A8-7680 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 | FM2+ |
| Power consumption (TDP) | 95 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 645 and A8-7680. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon II X4 645 and A8-7680 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 645 and A8-7680. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | no data | 64 GB |
| Maximum memory bandwidth | no data | 14.936 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Radeon R7 Series |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 645 and A8-7680.
| 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.
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 | 1.52 | 2.29 |
| Recency | 21 September 2010 | 29 October 2018 |
| Chip lithography | 45 nm | 28 nm |
| Power consumption (TDP) | 95 Watt | 45 Watt |
A8-7680 has a 50.7% higher aggregate performance score, an age advantage of 8 years, a 60.7% more advanced lithography process, and 111.1% lower power consumption.
The A8-7680 is our recommended choice as it beats the Athlon II X4 645 in performance tests.
Should you still have questions on choice between Athlon II X4 645 and A8-7680, 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.
