Atom D525 vs i7-2840QM
Primary details
Comparing Core i7-2840QM and Atom D525 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1763 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Atom |
| Power efficiency | 5.09 | no data |
| Architecture codename | Sandy Bridge (2011−2013) | Pinetrail (2009−2011) |
| Release date | 4 September 2011 (13 years ago) | 21 June 2010 (14 years ago) |
| Launch price (MSRP) | no data | $63 |
Detailed specifications
Core i7-2840QM and Atom D525 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) | 2 (Dual-core) |
| Threads | 8 | 4 |
| Base clock speed | no data | 1.8 GHz |
| Boost clock speed | 2.4 GHz | 1.83 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 24 | no data |
| L1 cache | 256 KB | 64K (per core) |
| L2 cache | 1 MB | 512K (per core) |
| L3 cache | 8 MB | 0 KB |
| Chip lithography | 32 nm | 45 nm |
| Die size | 216 mm2 | 66 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 1160 Million | 176 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i7-2840QM and Atom D525 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 |
| Socket | Socket G2 | FCBGA559 |
| Power consumption (TDP) | 45 Watt | 13 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2840QM and Atom D525. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | - |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
Security technologies
Core i7-2840QM and Atom D525 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-2840QM and Atom D525 are enumerated here.
| VT-d | + | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-2840QM and Atom D525. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR2, DDR3 |
| Maximum memory size | 32 GB | 4 GB |
| Max memory channels | no data | 1 |
| Maximum memory bandwidth | 25.598 GB/s | 6.4 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 3000 | Intel GMA 3150 |
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.
Pros & cons summary
| Recency | 4 September 2011 | 21 June 2010 |
| Physical cores | 4 | 2 |
| Threads | 8 | 4 |
| Chip lithography | 32 nm | 45 nm |
| Power consumption (TDP) | 45 Watt | 13 Watt |
i7-2840QM has an age advantage of 1 year, 100% more physical cores and 100% more threads, and a 40.6% more advanced lithography process.
Atom D525, on the other hand, has 246.2% lower power consumption.
We couldn't decide between Core i7-2840QM and Atom D525. We've got no test results to judge.
Should you still have questions on choice between Core i7-2840QM and Atom D525, ask them in Comments section, and we shall answer.
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