Atom Z500 vs Core i7-3940XM
Primary details
Comparing Core i7-3940XM and Atom Z500 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1399 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Atom |
| Architecture codename | Ivy Bridge (2012−2013) | Silverthorne (2008−2010) |
| Release date | 3 September 2012 (11 years ago) | 2 April 2008 (16 years ago) |
| Launch price (MSRP) | $1,096 | $45 |
| Current price | $525 (0.5x MSRP) | $702 (15.6x MSRP) |
Detailed specifications
Core i7-3940XM and Atom Z500 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 | 8 | 1 |
| Base clock speed | 3 GHz | no data |
| Boost clock speed | 3.9 GHz | 0.8 GHz |
| Bus support | no data | 400 MT/s |
| L1 cache | 64K (per core) | 56 KB |
| L2 cache | 256K (per core) | 512 KB |
| L3 cache | 8 MB (shared) | 0 KB |
| Chip lithography | 22 nm | 45 nm |
| Die size | 160 mm2 | 24.18 mm27.8 mm × 3.1 mm |
| Maximum core temperature | 105 °C | 90 °C |
| Number of transistors | 1,400 million | 47 Million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | No |
| VID voltage range | no data | 0.80 -1.1V |
Compatibility
Information on Core i7-3940XM and Atom Z500 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 | FCPGA988 | PBGA441 |
| Power consumption (TDP) | 55 Watt | 0.65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-3940XM and Atom Z500. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| AES-NI | + | no data |
| AVX | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | + | no data |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | + |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| FSB parity | no data | - |
| Status | Discontinued | Discontinued |
Security technologies
Core i7-3940XM and Atom Z500 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | + | no data |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-3940XM and Atom Z500 are enumerated here.
| AMD-V | + | no data |
| VT-d | + | - |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-3940XM and Atom Z500. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
| ECC memory support | - | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 4000 | - |
| Quick Sync Video | + | - |
| Clear Video HD | + | - |
| Graphics max frequency | 1.35 GHz | - |
| InTru 3D | + | - |
Graphics interfaces
Available interfaces and connections of Core i7-3940XM and Atom Z500 integrated GPUs.
| Number of displays supported | 3 | - |
| eDP | + | - |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | - |
| CRT | + | - |
Peripherals
Specifications and connection of peripherals supported by Core i7-3940XM and Atom Z500.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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%
Atom Z500 outperforms Core i7-3940XM by 1548% in wPrime 32.
Pros & cons summary
| Recency | 3 September 2012 | 2 April 2008 |
| Physical cores | 4 | 1 |
| Threads | 8 | 1 |
| Cost | $1096 | $45 |
| Chip lithography | 22 nm | 45 nm |
We couldn't decide between Core i7-3940XM and Atom Z500. We've got no test results to judge.
Should you still have questions on choice between Core i7-3940XM and Atom Z500, ask them in Comments section, and we shall answer.
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