X-bit Labs noticed AMD has released a document that describes Piledriver architecture details to software developers:
Advanced Micro Devices has released a document that is supposed to assist software developers to optimize their programs for AMD’s microprocessors based on Bulldozer micro-architecture and forthcoming chips. Among other things, AMD describes peculiarities of Piledriver micro-architecture as well as chips on its base, including Trinity, Vishera, Terramar and Sepang. The document also mentions Steamroller and Excavator micro-architectures
AMD has a rather strong and clear roadmap for the period of the following three years with the aim to increase performance-per-watt of its high-performance cores by approximately 10% - 15% every year. In practice, this transforms into 33% - 52% speed boost of Excavator micro-architecture compared to Bulldozer. Technologically, AMD wants to improve IPC (instructions per clock) performance and reduce power consumption at the same time, which transforms into higher clock-speeds.