Before revision: Power gating methods Fine-grain power gating Adding a sleep transistor to every cell that is to be turned off imposes a large area penalty, and individually gating the power of every cluster of cells creates timing issues introduced by inter-cluster voltage variation that are difficult to resolve.
After revision: Methods Fine-grain power gating Adding a sleep transistor to every cell that is to be turned off imposes a large area penalty, and individually gating the power of every cluster of cells creates timing issues introduced by inter-cluster voltage variation that are difficult to resolve.