Atom Z550 vs Pentium G645T
Aggregate performance score
Pentium G645T outperforms Atom Z550 by a whopping 421% 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 | 3059 | 3718 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Atom |
| Power efficiency | 0.86 | 2.90 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Sandy Bridge (2011−2013) | Silverthorne (2008−2010) |
| Release date | 2 September 2012 (13 years ago) | 8 April 2009 (17 years ago) |
Detailed specifications
Basic parameters of Pentium G645T and Atom Z550: 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) | 1 (Single-Core) |
| Threads | 2 | 2 |
| Base clock speed | 2.5 GHz | 2 GHz |
| Boost clock speed | 2.5 GHz | 2 GHz |
| Bus type | no data | FSB |
| Bus rate | 5 GT/s | 533.33 MT/s |
| Multiplier | no data | 15 |
| L1 cache | 64 KB (per core) | 56 KB (per core) |
| L2 cache | 256 KB (per core) | 512 KB (per core) |
| L3 cache | 3 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 45 nm |
| Die size | 131 mm2 | 26 mm2 |
| Maximum core temperature | 65 °C | 90 °C |
| Number of transistors | 504 million | 47 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium G645T and Atom Z550 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 (Uniprocessor) |
| Socket | FCLGA1155 | PBGA441 |
| Power consumption (TDP) | 35 Watt | 2.4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium G645T and Atom Z550. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| 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
Pentium G645T and Atom Z550 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium G645T and Atom Z550 are enumerated here.
| VT-d | - | - |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium G645T and Atom Z550. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | unknown |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 17 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics for 2nd Generation Intel Processors | On certain motherboards (Chipset feature) |
| Graphics max frequency | 1.1 GHz | no data |
Graphics interfaces
Available interfaces and connections of Pentium G645T and Atom Z550 integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Pentium G645T and Atom Z550.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | 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 | 0.73 | 0.14 |
| Recency | 2 September 2012 | 8 April 2009 |
| Physical cores | 2 | 1 |
| Chip lithography | 32 nm | 45 nm |
| Power consumption (TDP) | 35 Watt | 2 Watt |
Pentium G645T has a 421% higher aggregate performance score, an age advantage of 3 years, 100% more physical cores, and a 41% more advanced lithography process.
Atom Z550, on the other hand, has 1650% lower power consumption.
The Intel Pentium G645T is our recommended choice as it beats the Intel Atom Z550 in performance tests.
Note that Pentium G645T is a desktop processor while Atom Z550 is a notebook one.
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