A8-3870K vs i3-2120
Aggregate performance score
A8-3870K outperforms Core i3-2120 by a significant 20% based on our aggregate benchmark results.
Primary details
Comparing Core i3-2120 and A8-3870K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2307 | 2162 |
| Place by popularity | 98 | not in top-100 |
| Cost-effectiveness evaluation | 0.14 | no data |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 1.79 | 1.39 |
| Architecture codename | Sandy Bridge (2011−2013) | Llano (2011−2012) |
| Release date | 20 February 2011 (13 years ago) | 20 December 2011 (12 years ago) |
| Launch price (MSRP) | $95 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i3-2120 and A8-3870K 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 | 4 | 4 |
| Base clock speed | 3.3 GHz | 3 GHz |
| Boost clock speed | 3.3 GHz | 3 GHz |
| Bus rate | 5 GT/s | no data |
| L1 cache | 64 KB (per core) | 128 KB (per core) |
| L2 cache | 256 KB (per core) | 1 MB (per core) |
| L3 cache | 3 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 131 mm2 | 228 mm2 |
| Maximum core temperature | 69 °C | no data |
| Number of transistors | 504 million | 1,178 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i3-2120 and A8-3870K 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 | FCLGA1155 | FM1 |
| Power consumption (TDP) | 65 Watt | 100 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i3-2120 and A8-3870K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX | 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 |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i3-2120 and A8-3870K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i3-2120 and A8-3870K 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 Core i3-2120 and A8-3870K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 2000 | AMD Radeon HD 6550D |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.1 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i3-2120 and A8-3870K integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i3-2120 and A8-3870K.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | 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 | 1.23 | 1.47 |
| Integrated graphics card | 0.55 | 1.04 |
| Recency | 20 February 2011 | 20 December 2011 |
| Physical cores | 2 | 4 |
| Power consumption (TDP) | 65 Watt | 100 Watt |
i3-2120 has 53.8% lower power consumption.
A8-3870K, on the other hand, has a 19.5% higher aggregate performance score, 89.1% faster integrated GPU, an age advantage of 10 months, and 100% more physical cores.
The A8-3870K is our recommended choice as it beats the Core i3-2120 in performance tests.
Should you still have questions on choice between Core i3-2120 and A8-3870K, ask them in Comments section, and we shall answer.
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