GPU Architecture Optimization For Mobile Computing

Graphical Processing Units (GPUs) are always criticized for high power consumption due to its massive performance that it can deliver. While GPUs are getting into the mobile market, more power constraints are established. In this work, we evaluate the power gating techniques for GPU cache arrays. The leakage power in active mode is measured at 2.28 μW whereas is sleep mode leakage power is measured at 0.61 μW (26.7% of active mode leakage) and 0.034 μW at off mode (1.5% of active mode leakage) at 1.0V power supply using 45nm standard CMOS process.