Atom Z540 vs Z550
Aggregate performance score
Atom Z550 outperforms Atom Z540 by a small 9% based on our aggregate benchmark results.
Primary details
Comparing Atom Z550 and Atom Z540 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3177 | 3199 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Atom | Intel Atom |
| Power efficiency | 9.46 | 8.67 |
| Architecture codename | Silverthorne (2008−2010) | Silverthorne (2008−2010) |
| Release date | 8 April 2009 (15 years ago) | 2 April 2008 (16 years ago) |
| Launch price (MSRP) | no data | $160 |
Detailed specifications
Atom Z550 and Atom Z540 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) | 1 (Single-Core) |
| Threads | 2 | 2 |
| Base clock speed | 2 GHz | 1.86 GHz |
| Boost clock speed | 2 GHz | 0.07 GHz |
| Bus type | FSB | FSB |
| Bus rate | 533.33 MT/s | 533.33 MT/s |
| Multiplier | 15 | 14 |
| L1 cache | 56 KB (per core) | 56 KB |
| L2 cache | 512 KB (per core) | 512 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 26 mm2 | 24.18 mm2 |
| Maximum core temperature | 90 °C | 90 °C |
| Number of transistors | 47 million | 47 Million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 0.75 -1.1V |
Compatibility
Information on Atom Z550 and Atom Z540 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 | PBGA441 | PBGA441 |
| Power consumption (TDP) | 2.4 Watt | 2.4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z550 and Atom Z540. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | + | + |
| FSB parity | - | - |
Security technologies
Atom Z550 and Atom Z540 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z550 and Atom Z540 are enumerated here.
| VT-d | - | - |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z550 and Atom Z540. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | unknown | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | - |
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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Pros & cons summary
| Performance score | 0.24 | 0.22 |
| Recency | 8 April 2009 | 2 April 2008 |
Atom Z550 has a 9.1% higher aggregate performance score, and an age advantage of 1 year.
Given the minimal performance differences, no clear winner can be declared between Atom Z550 and Atom Z540.
Should you still have questions on choice between Atom Z550 and Atom Z540, ask them in Comments section, and we shall answer.
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