Atom Z540 vs Phenom II X4 940 BE
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 3450 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Atom |
| Power efficiency | no data | 3.52 |
| Designer | AMD | Intel |
| Manufacturer | GlobalFoundries | no data |
| Architecture codename | Deneb (2009−2011) | Silverthorne (2008−2010) |
| Release date | 8 January 2009 (16 years ago) | 2 April 2008 (17 years ago) |
| Launch price (MSRP) | $275 | $160 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Phenom II X4 940 BE 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 | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 2 |
| Base clock speed | 3 GHz | 1.86 GHz |
| Boost clock speed | 3 GHz | 0.07 GHz |
| Bus type | no data | FSB |
| Bus rate | no data | 533.33 MT/s |
| Multiplier | no data | 14 |
| L1 cache | 128 KB (per core) | 56 KB |
| L2 cache | 512 KB (per core) | 512 KB |
| L3 cache | 6 MB (shared) | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 258 mm2 | 24.18 mm2 |
| Maximum core temperature | no data | 90 °C |
| Number of transistors | 758 million | 47 Million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 0.75 -1.1V |
Compatibility
Information on Phenom II X4 940 BE 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 | 1 (Uniprocessor) |
| Socket | AM2+ | PBGA441 |
| Power consumption (TDP) | 125 Watt | 2.4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 940 BE 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) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | + |
| FSB parity | no data | - |
Security technologies
Phenom II X4 940 BE and Atom Z540 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 940 BE and Atom Z540 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 940 BE and Atom Z540. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | - |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 940 BE and Atom Z540.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 8 January 2009 | 2 April 2008 |
| Physical cores | 4 | 1 |
| Threads | 4 | 2 |
| Power consumption (TDP) | 125 Watt | 2 Watt |
Phenom II X4 940 BE has an age advantage of 9 months, and 300% more physical cores and 100% more threads.
Atom Z540, on the other hand, has 6150% lower power consumption.
We couldn't decide between AMD Phenom II X4 940 BE and Intel Atom Z540. We've got no test results to judge.
Note that Phenom II X4 940 BE is a desktop processor while Atom Z540 is a notebook one.
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