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The percentage of chip that can be powered (within the power budget) is decreasing. That means even if we can pack a lot of transistors in a chip(Moore's law), not all of them can be powered at the same time due to power limitation. The area of the chip which can't be powered is known as "Dark Silicon". Studies reveal that the amount of dark silicon in 22nm technology as around 20% and it predicts it will be more than 50% at 8nm. The question is, what is the point in scaling down and increasing the number of transistors per chip if we can't use them?

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