AMD also produces chips that combine CPUs and GPUs together. The document above suggests that combining CPUs and GPUs on the same chip saves energy by eliminating connections between discrete chips, and it can also save energy by shifting the computing workloads between the CPU and GPU to optimize energy efficiency.
vrazdan
Another strategy seemingly employed to reduce power consumption in mobile spaces is the big little architecture, as described by Samsung https://www.samsung.com/global/business/semiconductor/minisite/Exynos/w/mediacenter.html#?v=blog_Big_LITTLE_Processing_Defining_the_Future_of_SoC_Architecture. The strategy they use is that rather than have multiple cores of the same computing power, they have some cores more powerful than others, and delegate tasks to the cores accordingly. I'm unsure though how the logic works to delegate the tasks themselves and deciding which core should receive them, as well as the power cost of turning a core on and off repeatedly.
http://www.amd.com/Documents/The-Future-of-Energy-Efficient-IT.pdf
AMD also produces chips that combine CPUs and GPUs together. The document above suggests that combining CPUs and GPUs on the same chip saves energy by eliminating connections between discrete chips, and it can also save energy by shifting the computing workloads between the CPU and GPU to optimize energy efficiency.
Another strategy seemingly employed to reduce power consumption in mobile spaces is the big little architecture, as described by Samsung https://www.samsung.com/global/business/semiconductor/minisite/Exynos/w/mediacenter.html#?v=blog_Big_LITTLE_Processing_Defining_the_Future_of_SoC_Architecture. The strategy they use is that rather than have multiple cores of the same computing power, they have some cores more powerful than others, and delegate tasks to the cores accordingly. I'm unsure though how the logic works to delegate the tasks themselves and deciding which core should receive them, as well as the power cost of turning a core on and off repeatedly.