But perhaps of more concern is Nvidia's decision to include a fan to actively cool the Shield, which given the relatively bulky dimensions of the device compared to a thin tablet, doesn't look good for the heat generation potential of the integrated Tegra 4 SoC processor.
Nvidia's decision to actively cool the Shield is surprising not least because the Tegra 4 SoC processor and memory modules are designed to be used in passively cooled tablets. It is likely that the firm is covering potential overheating issues simply because it expects the chip to be running computationally heavy games most of the time.
Source: The Inquirer