i5-520M vs Atom C3858
Aggregate performance score
Atom C3858 outperforms Core i5-520M by a whopping 192% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1870 | 2696 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.37 | 0.06 |
| Market segment | Server | Laptop |
| Series | Intel Atom | Intel Core i5 |
| Power efficiency | 12.27 | no data |
| Designer | Intel | Intel |
| Architecture codename | Goldmont (2016−2017) | Arrandale (2010−2011) |
| Release date | 15 August 2017 (8 years ago) | 7 January 2010 (15 years ago) |
| Launch price (MSRP) | $332 | $225 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Atom C3858 has 517% better value for money than i5-520M.
Performance to price scatter graph
Detailed specifications
Atom C3858 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 | 12 (Dodeca-Core) | 2 (Dual-core) |
| Threads | 12 | 4 |
| Base clock speed | 2 GHz | 2.4 GHz |
| Boost clock speed | 2 GHz | 2.93 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | no data | 1 × 2.5 GT/s |
| Multiplier | 20 | 18 |
| L1 cache | 672 KB | 128 KB |
| L2 cache | 12 MB | 512 KB |
| L3 cache | 12 MB | 3 MB |
| Chip lithography | 14 nm | 32 nm |
| Die size | no data | 81+114 mm2 |
| Maximum core temperature | 83 °C | 105 °C |
| Number of transistors | no data | 382+177 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Atom C3858 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 (Uniprocessor) | 1 (Uniprocessor) |
| Socket | FCBGA1310 | BGA1288,PGA988 |
| Power consumption (TDP) | 25 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom C3858 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) | + | + |
| QuickAssist | + | no data |
| Turbo Boost Technology | - | + |
| Hyper-Threading Technology | - | + |
| 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
Atom C3858 and Core i5-520M technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | + |
| Secure Boot | + | no data |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom C3858 and Core i5-520M are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom C3858 and Core i5-520M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4: 2400 | DDR3-800, DDR3-1066 |
| Maximum memory size | 256 GB | 8.3 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 38.397 GB/s | 17.051 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | 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 Atom C3858 and Core i5-520M integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Atom C3858 and Core i5-520M.
| PCIe version | 3 | 2.0 |
| PCI Express lanes | 16 | 16 |
| USB revision | 3 | no data |
| Total number of SATA ports | 16 | no data |
| Number of USB ports | 8 | no data |
| Integrated LAN | 4x10/2.5/1 GBE | no data |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 2.86 | 0.98 |
| Recency | 15 August 2017 | 7 January 2010 |
| Physical cores | 12 | 2 |
| Threads | 12 | 4 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 25 Watt | 35 Watt |
Atom C3858 has a 191.8% higher aggregate performance score, an age advantage of 7 years, 500% more physical cores and 200% more threads, a 128.6% more advanced lithography process, and 40% lower power consumption.
The Intel Atom C3858 is our recommended choice as it beats the Intel Core i5-520M in performance tests.
Be aware that Atom C3858 is a server/workstation processor while Core i5-520M is a notebook one.
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