AMD recently released a new generation of Carrizo and Carrizo-L APU, Both Carrizo processors are equipped with two cores and based on micro-architecture code-named Excavator. For Graphics integrated Radeon new generation is doing a job which is fully compatible with the architecture of HSA (Heterogeneous System Architecture) – thanks to the CPU and GPU will be able to work together on a task. These models are used for efficient laptops and PCs All-in-One. Which is supported by the second paragraph after Kaveri HSA heterogeneous computing APU. Although the process technology is still 28nm, but Carrizo in energy efficiency reached 200 times better than previous generations, but it is not the ultimate goal of AMD, they want energy efficient AMD mobile platform in 2020 increased by at least 25 times.
AMD: APU power efficiency will be upto 25 times better till 2020
AMD held a few days ago, “the future of computing,” Day to elaborate on the Carrizo APU’s energy-efficient design, while the goal for the next five-year to improve the energy efficiency of APU upto 25-times is not in fact the first time. Also, if we see the previous improvement rate in the previous six years between 2008-2014, AMD’s APU energy efficiency has increased 10-times so in order to achieve the 25-times better power efficiency they have to move to the new process node also need to work a lot. Also previously we have seen that they just left the tablet market so now they have more space to focus on their core competence to achieve the competitive advantage our rivals.
AMD believes energy efficiency improvements can not rely on the semiconductor manufacturing process (Intel certainly do not agree), because after 2000 processor energy efficiency growth rate has slowed down (as shown in the first figure), the industry’s need for new infrastructure development ideas.
AMD to focus on the development of this architecture to reduce power consumption for many years, the traditional design that people will reduce the voltage, increases the current, but it is designed for power supplies and packages are presented a great challenge, but also a perfect voltage control is does not exist, because there is always a voltage fluctuation, even if only 10% of the float, in order to compensate for this floating, meaning 20% of the power consumption of waste (10% voltage compensation is 1.1x, the power consumption is proportional to the square of the voltage)
AMD’s design is different, this voltage adaptive Once detected voltage exceeds the average value, the system will react in a very short period of time, by reducing the frequency of the way to make the voltage returns to normal, and the callback frequency again, this more power through voltage compensation adjustment method than ever before.
According to AMD’s interpretation, with the 3.5GHz clock frequency the voltage drop is 50-70MV (varies depending on the temperature), reducing power consumption by 10-20%.
AMD plans a lot of new techniques and methods to improve APU performance, lower power consumption, and some of the technology has been implemented in the Carrizo and more are still in development. Compared Kaveri, Carrizo enhances energy efficiency has doubled, but AMD’s goal as stated earlier, the energy efficiency of mobile platforms at least 25 times in 2020, it is now the end of 2014, so AMD have next five years on to achieve this goal.