A8-7100 vs i7-2840QM
Aggregate performance score
Core i7-2840QM outperforms A8-7100 by a whopping 133% 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 | 2072 | 2762 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | AMD Kaveri |
| Power efficiency | 2.06 | 2.09 |
| Designer | Intel | AMD |
| Architecture codename | Sandy Bridge (2011−2013) | Kaveri (2014−2015) |
| Release date | 4 September 2011 (14 years ago) | 4 June 2014 (11 years ago) |
Detailed specifications
Core i7-2840QM and A8-7100 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) | 4 (Quad-Core) |
| Threads | 8 | 4 |
| Base clock speed | no data | 1.8 GHz |
| Boost clock speed | 2.4 GHz | 3 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 24 | no data |
| L1 cache | 256 KB | no data |
| L2 cache | 1 MB | 4096 KB |
| L3 cache | 8 MB | no data |
| Chip lithography | 32 nm | 28 nm |
| Die size | 216 mm2 | 245 mm2 |
| Number of transistors | 1160 Million | 2410 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i7-2840QM and A8-7100 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) | no data |
| Socket | Socket G2 | FP3 |
| Power consumption (TDP) | 45 Watt | 19 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2840QM and A8-7100. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA |
| AES-NI | + | + |
| FMA | + | + |
| AVX | + | + |
| FRTC | - | + |
| TrueAudio | - | + |
| PowerNow | - | + |
| PowerGating | - | + |
| Out-of-band client management | - | + |
| VirusProtect | - | + |
| HSA | - | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
Security technologies
Core i7-2840QM and A8-7100 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-2840QM and A8-7100 are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| IOMMU 2.0 | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-2840QM and A8-7100. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3-1600 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | 25.598 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 3000 | AMD Radeon R5 Graphics |
| iGPU core count | no data | 4 |
| Enduro | - | + |
| Switchable graphics | - | + |
| UVD | - | + |
| VCE | - | + |
Graphics interfaces
Available interfaces and connections of Core i7-2840QM and A8-7100 integrated GPUs.
| DisplayPort | - | + |
| HDMI | - | + |
Graphics API support
APIs supported by Core i7-2840QM and A8-7100 integrated GPUs, sometimes API versions are included.
| DirectX | no data | DirectX® 12 |
| Vulkan | - | + |
Peripherals
Specifications and connection of peripherals supported by Core i7-2840QM and A8-7100.
| PCIe version | no data | 3.0 |
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 | 2.19 | 0.94 |
| Recency | 4 September 2011 | 4 June 2014 |
| Threads | 8 | 4 |
| Chip lithography | 32 nm | 28 nm |
| Power consumption (TDP) | 45 Watt | 19 Watt |
i7-2840QM has a 133% higher aggregate performance score, and 100% more threads.
A8-7100, on the other hand, has an age advantage of 2 years, a 14.3% more advanced lithography process, and 136.8% lower power consumption.
The Intel Core i7-2840QM is our recommended choice as it beats the AMD A8-7100 in performance tests.
Other comparisons
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