i5-520M vs A8-3870K
Aggregate performance score
A8-3870K outperforms Core i5-520M by a substantial 36% based on our aggregate benchmark results.
Primary details
Comparing A8-3870K and Core i5-520M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2160 | 2405 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core i5 |
| Power efficiency | 1.39 | 2.92 |
| Architecture codename | Llano (2011−2012) | Arrandale (2010−2011) |
| Release date | 20 December 2011 (12 years ago) | 7 January 2010 (14 years ago) |
| Launch price (MSRP) | no data | $225 |
Detailed specifications
A8-3870K and Core i5-520M 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 | 4 |
| Base clock speed | 3 GHz | 2.4 GHz |
| Boost clock speed | 3 GHz | 2.93 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | no data | 1 × 2.5 GT/s |
| Multiplier | no data | 18 |
| L1 cache | 128 KB (per core) | 128 KB |
| L2 cache | 1 MB (per core) | 512 KB |
| L3 cache | 0 KB | 3 MB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 228 mm2 | 81+114 mm2 |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 1,178 million | 382+177 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on A8-3870K and Core i5-520M 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 (Uniprocessor) |
| Socket | FM1 | BGA1288,PGA988 |
| Power consumption (TDP) | 100 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A8-3870K and Core i5-520M. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | - | + |
| FMA | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | + |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| PAE | no data | 36 Bit |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
A8-3870K and Core i5-520M technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A8-3870K and Core i5-520M are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A8-3870K and Core i5-520M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3-800, DDR3-1066 |
| Maximum memory size | no data | 8.3 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 17.051 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon HD 6550D | Intel® HD Graphics for Previous Generation Intel® Processors |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 766 MHz |
Graphics interfaces
Available interfaces and connections of A8-3870K and Core i5-520M integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by A8-3870K and Core i5-520M.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 16 |
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 | 1.47 | 1.08 |
| Recency | 20 December 2011 | 7 January 2010 |
| Physical cores | 4 | 2 |
| Power consumption (TDP) | 100 Watt | 35 Watt |
A8-3870K has a 36.1% higher aggregate performance score, an age advantage of 1 year, and 100% more physical cores.
i5-520M, on the other hand, has 185.7% lower power consumption.
The A8-3870K is our recommended choice as it beats the Core i5-520M in performance tests.
Note that A8-3870K is a desktop processor while Core i5-520M is a notebook one.
Should you still have questions on choice between A8-3870K and Core i5-520M, ask them in Comments section, and we shall answer.
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