Celeron 1020M vs Atom Z520
Primary details
Comparing Atom Z520 and Celeron 1020M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2599 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Atom | Intel Celeron |
| Power efficiency | no data | 2.16 |
| Architecture codename | Silverthorne (2008−2010) | Ivy Bridge (2012−2013) |
| Release date | 2 April 2008 (16 years ago) | 20 January 2013 (11 years ago) |
| Launch price (MSRP) | $65 | $86 |
Detailed specifications
Atom Z520 and Celeron 1020M 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 | 1 (Single-Core) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 1.33 GHz | 2.1 GHz |
| Boost clock speed | 0.03 GHz | 2.1 GHz |
| Bus type | FSB | no data |
| Bus rate | 533.33 MT/s | 5 GT/s |
| Multiplier | 10 | no data |
| L1 cache | 56 KB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 45 nm | 22 nm |
| Die size | 24.18 mm2 | 118 mm2 |
| Maximum core temperature | 90 °C | 105 °C |
| Maximum case temperature (TCase) | no data | 105 °C |
| Number of transistors | 47 Million | 1,400 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.75-1.1V | no data |
Compatibility
Information on Atom Z520 and Celeron 1020M 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 |
| Socket | PBGA441 | FCPGA988 |
| Power consumption (TDP) | 2 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z520 and Celeron 1020M. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE2, Intel® SSE3, Intel® SSSE3 | Intel® SSE4.1, Intel® SSE4.2 |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | + | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| FSB parity | - | no data |
Security technologies
Atom Z520 and Celeron 1020M technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z520 and Celeron 1020M are enumerated here.
| VT-d | - | - |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z520 and Celeron 1020M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | no data | 32 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | Intel® HD Graphics for 3rd Generation Intel® Processors |
| Clear Video HD | - | - |
| Graphics max frequency | - | 1 GHz |
| InTru 3D | - | - |
Graphics interfaces
Available interfaces and connections of Atom Z520 and Celeron 1020M integrated GPUs.
| Number of displays supported | - | 3 |
| eDP | - | + |
| DisplayPort | - | + |
| HDMI | - | + |
| SDVO | - | + |
| CRT | - | + |
Peripherals
Specifications and connection of peripherals supported by Atom Z520 and Celeron 1020M.
| 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.
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
| Recency | 2 April 2008 | 20 January 2013 |
| Physical cores | 1 | 2 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 2 Watt | 35 Watt |
Atom Z520 has 1650% lower power consumption.
Celeron 1020M, on the other hand, has an age advantage of 4 years, 100% more physical cores, and a 104.5% more advanced lithography process.
We couldn't decide between Atom Z520 and Celeron 1020M. We've got no test results to judge.
Should you still have questions on choice between Atom Z520 and Celeron 1020M, ask them in Comments section, and we shall answer.
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