First, under arm's arm v7 instruction set, has produced the famous cortex-a structure, successively was born
Cortex-a8, A9, A15, A7 architecture. A7 is put forward in A8, A9 and A15 structure, and has "historical advance".
The first, cortex-a8, A9, A15, A7 and other different architectures, not replace each other, upgrade the relationship, but to express different positioning.
Third, the A7 architecture approximate A8, but the collection A15 part characteristic, is compatible with the A15 instruction, the A15 application can run on the A7.
The A7 architecture embodies arm's biggest features and advantages, taking the arm industry-leading performance power consumption to the extreme.
V, A7 performance power consumption ratio is obvious, A8, A9, A15 in the performance of power consumption ratio is A7 dumped a few streets.
VI, the A7 architecture is to coordinate with the A15 architecture, the formation of ARM big.LITTLE processor.
MTK6577 's phone is already in hand ... MTK6588 think the prospect is good, low price, performance passable, heat less, power-saving strong ...
It is hoped that with the good support of the system and application, there will be A7 eight cores and 16 cores as soon as possible (28nm A7 core is only 0.5 square millimeters) ...
Of course, the tablet and high-end smartphone sector is hoping to see big next year. Little appear ...
Ps:
ARM Cortex-a7, 8, 9, 15 is not a replacement upgrade relationship, but the market and function "positioning" different.
My understanding is that:
A8 is positioned in highly mobile high-performance chaotic operations for mobile devices such as mobile phones and tablets.
A9 is positioned in a highly mobile high-performance chaotic operation of multi-core collaboration for mobile devices, such as mobile phones, tablets.
A15 is positioned for high-performance computing (ARM is used to challenge Intel's first move) and does not shy away from high power consumption, mainly tablets, laptops and even desktop PCs, multimedia, servers, etc.
A7 is positioned to provide acceptable performance under ultra-low power consumption. For micro-portable devices, mobile phones, medical equipment, and so on, and in big. Under the little concept, A7 and A15 provide a flexible processor with performance and power switching.