Fixing CPU core sleep issues on Biostar B650MT?
While sneaking through corridors, I'd get these tiny, jarring hitches that totally ruined the atmosphere. HWInfo revealed that the Biostar B650MT was aggressively pushing cores into C6 deep sleep during low load, creating a 5-12ms wake-up delay. I tried the 'Ultimate Performance' power plan in Windows, but that just raised my idle temps by 10℃ without really fixing the hitches. I eventually went into the BIOS Advanced Power Management, disabled Global C-states, and turned off Core Parking. Now, the CPU clocks stay in a lively 3.2-4.1GHz range without those violent dips, and the stuttering is gone. My idle power draw went up by about 8W, but I managed to offset that by manually tuning the SoC voltage to 1.1V. CPU temps are now 52-60℃ with fans at 1100-1300 RPM. Comparison tests show the fans are rock steady at 1100-1300 RPM.
