![]() Table 6-1 lists typical TDPs for various processor models:Īlthough it is important to reduce cost and conserve power for the desktop workstations and servers, these platforms essentially are not limited by the availability of power. The TDP is often broken down into the power consumption of individual components, such as the CPU, the GPU, and so on. For example, TDP is the maximum allowed power dissipation for a platform. Power limits are usually expressed in terms of thermal design power (TDP), which is the maximum amount of heat generated for which the cooling requirement is accounted for in the design. ![]() Therefore, power limits are a fundamental consideration in the design of modern computing devices. The main concern from the consumer’s point of view, however, is having a system with better battery life, which is cost-effective over the device’s life. Most important, they need to operate in a limited power envelope. Such seemingly contradictory requirements present unique challenges: not only do newer mobile devices need extensive battery lives but they also are harder to cool, as they cannot afford bulky fans. At the same time, there’s high demand for decreasing form factor, lower weight, and quieter battery-powered devices. In today’s mobile world order, we face ever-increasing desires for compelling user experiences, wearable interfaces, wireless connectivity, all-day computing, and-most critical-higher performance. This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. After that, we briefly introduce various criteria for power-aware platform designs. Therefore, we first introduce the concept of power consumption and view its limits on typical modern devices, then we follow with a discussion of common media workloads and usages on consumer platforms. Power consumption needs to be considered together with those other dimensions tradeoffs are often made in favor of tuning one of these dimensions, based on the needs of the application and with a view toward providing the best user experience. After discussing video compression, quality, and performance aspects in the previous chapters, in this chapter we turn our attention to another dimension of video application tuning: power consumption.
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