Dynamic Voltage/Frequency Scaling (DVFS)

Tag: dvfs

Aliases: DVFS, voltage and frequency scaling, P-states

A power-management technique that adjusts the supply voltage and clock frequency at runtime to match the workload's performance demand. Because dynamic power scales as roughly V^3 when V tracks f, even small frequency reductions yield disproportionate power savings.

Lecture references

• L01 · Intro — p.12 , p.13 , p.16
• L02 · Performance & Power — p.30 , p.31 , p.32 , p.35 , p.37 , p.38 , p.39
• L03 · Pipelining — p.7 , p.8 , p.9 , p.10 , p.12 , p.13 , p.14
• L04 · Hazards — p.10

Exam references

• Final — Spring 2025 — Q3(e)
• Midterm — Spring 2025 — Q3(a) , Q3(b) , Q3(c)