AMD Precision Boost 2

Precision Boost 2 is AMD's fine-grained, real-time boost frequency control algorithm introduced with Zen 2 (Ryzen 3000 series) and continued through Zen 5 (Ryzen 9000). It monitors five concurrent hardware telemetry signals — socket power (PPT), VRM current (TDC), CPU current (EDC), temperature (Tctl/Tdie), and core voltage quality — and boosts all active cores as high as headroom permits simultaneously, rather than using a binary all-core / single-core stepped model. PB2 Overdrive (PBO) extends power limits beyond default envelope. Curve Optimizer (Zen 3+) further refines per-core voltage curves for higher sustained boost frequencies.