GPU in Smartphones

15 Oct 2017
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GPU in Smartphones

GPU is of the most important component of latest smartphones.
As GPU power consumption in smartphones increases with more advanced graphic performance, it becomes important to measure GPU power consumption accurately. The conventional GPU power model assumes, simply, that a GPU consumes constant power only when turned on. This is no longer true for recent smartphone GPUs. GPU power consumption in recent smartphones changes with voltage and frequency, since recent smartphone GPUs uses DVFS (dynamic voltage and frequency scaling) to reduce their power consumption.
GPU power consumption increases also with the utilization of smartphones.

Recently, the smartphone has become one of the most used consumer electronics. In order to provide high graphics performance to users, many high-end smartphones utilize a high-end GPU. However, the integration of a high-end GPU increases the power consumption of the smartphones. This increased power consumption results in a shorter battery lifetime.

To increase the battery lifetime, it is essential to reduce GPU power consumption as GPU is one of the most frequently utilized hardware components and accounts for a notable portion of the system power.
For example, a GPU is utilized for the scrolling of a smartphone’s home screen, which is one of the most basic operations in smartphones.
In addition, GPU is heavily utilized while playing games, which are among the most popular smartphone applications. The GPU power consumption during a game’s execution usually occupies up to one-fifth of the system power consumption in latest mobile phones.

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