Atom Z540 vs Z550
Primary details
Comparing Atom Z550 and Atom Z540 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Atom | Intel Atom |
| 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 |
| Current price | no data | $250 (1.6x MSRP) |
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 | 0.1 GHz | 0.07 GHz |
| Bus support | 533.33 MT/s | 533.33 MT/s |
| L1 cache | 56 KB | 56 KB |
| L2 cache | 512 KB | 512 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 24.18 mm27.8 mm × 3.1 mm | 24.18 mm27.8 mm × 3.1 mm |
| Maximum core temperature | 90 °C | 90 °C |
| Number of transistors | 47 Million | 47 Million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| 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 | - | - |
| Status | Discontinued | Discontinued |
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 | + | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | - |
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.
Benchmark coverage: 68%
Z550 outperforms Z540 by 9% in Passmark.
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.
Benchmark coverage: 20%
Z550 outperforms Z540 by 16% in Cinebench 10 32-bit single-core.
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.
Benchmark coverage: 19%
Z550 outperforms Z540 by 26% in Cinebench 10 32-bit multi-core.
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.
Benchmark coverage: 18%
Z540 outperforms Z550 by 4% in wPrime 32.
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