Podcasts · The Hardware Podcast with Fexingo: Chips, Devices, and Electronics Engineering Conversations
How Chips Are Using On-Chip Voltage Regulators to Save Power
· 10 min · S2 E74
Episode How Chips Are Using On-Chip Voltage Regulators to Save Power
In this episode of The Hardware Podcast, Lucas and Luna explore the quiet revolution in power delivery: moving voltage regulators from the motherboard directly onto the chip. They dissect why Intel's FIVR technology, first introduced in Haswell, is now being reimagined at advanced nodes for both CPUs and GPUs. The hosts explain how on-chip regulators reduce power loss, improve transient response, and enable finer-grained voltage islands—allowing designers to shut off unused logic blocks at the nanosecond scale. Key numbers include the efficiency gains (typically 5-15% total power savings) and the trade-offs in die area and thermal density. Lucas and Luna also discuss real-world implementations from AMD's Ryzen and Apple's M-series chips, and what this means for the future of heterogeneous integration and chiplets. A concrete look at a technology that touches every modern chip, yet remains invisible to most users.
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Transcript
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