A6-3400M vs i7-2840QM
Aggregate performance score
Core i7-2840QM outperforms A6-3400M by a whopping 223% based on our aggregate benchmark results.
Primary details
Comparing Core i7-2840QM and A6-3400M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1779 | 2667 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | AMD A-Series |
| Power efficiency | 5.09 | 2.03 |
| Architecture codename | Sandy Bridge (2011−2013) | Llano (2011−2012) |
| Release date | 4 September 2011 (13 years ago) | 14 June 2011 (13 years ago) |
Detailed specifications
Core i7-2840QM and A6-3400M 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 | 1.4 GHz |
| Boost clock speed | 2.4 GHz | 2.3 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 24 | no data |
| L1 cache | 256 KB | 128 KB (per core) |
| L2 cache | 1 MB | 1 MB (per core) |
| L3 cache | 8 MB | 0 KB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 216 mm2 | 228 mm2 |
| Number of transistors | 1160 Million | 1,178 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i7-2840QM and A6-3400M 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 | FS1 |
| Power consumption (TDP) | 45 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2840QM and A6-3400M. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | 3DNow!, MMX, SSE, SSE2, SSE3, SSE4a, Radeon HD 6480G |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
Security technologies
Core i7-2840QM and A6-3400M 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 A6-3400M 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 Core i7-2840QM and A6-3400M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | 32 GB | no data |
| Maximum memory bandwidth | 25.598 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 3000 | AMD Radeon HD 6520G (400 MHz) |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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
| Performance score | 2.42 | 0.75 |
| Integrated graphics card | 0.66 | 0.78 |
| Recency | 4 September 2011 | 14 June 2011 |
| Threads | 8 | 4 |
| Power consumption (TDP) | 45 Watt | 35 Watt |
i7-2840QM has a 222.7% higher aggregate performance score, an age advantage of 2 months, and 100% more threads.
A6-3400M, on the other hand, has 18.2% faster integrated GPU, and 28.6% lower power consumption.
The Core i7-2840QM is our recommended choice as it beats the A6-3400M in performance tests.
Should you still have questions on choice between Core i7-2840QM and A6-3400M, ask them in Comments section, and we shall answer.
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