VRM · Voltage Regulator Module
Power-electronics stage that steps board voltage down to the low voltage a GPU or CPU core actually needs.
On-board converter delivering the precise low voltage a processor core requires from the board supply.
Also written as: Voltage Regulator Module
Current numbers
About 80–87% AC case (82% representative)Chapter 4.1's assumed AC conversion chain, utility to VRM; distribution and auxiliary losses not included
~87% SST/800 VDC (SemiAnalysis model) vs ~82% AC (guide's four-stage example)Illustrative utility-to-VRM efficiency cases: SemiAnalysis May 2026 SST/800 VDC model versus the guide's four-stage AC example
~87%SemiAnalysis’s modeled utility-to-VRM efficiency for an SST/800 VDC chain; Chapter 4.1 assumes the AC chain separately