| Parameter | Why it matters | Good target | |-----------|----------------|-------------| | (12V, 5V, 3.3V) | Prevents system crashes | ±3% or better | | Ripple & noise | High ripple degrades components | <50 mV p-p (12V), <30 mV (5V/3.3V) | | Efficiency | Heat & power cost | ≥80% (basic), ≥90% (Gold/Platinum) | | Hold-up time | Prevents resets during power flickers | >16 ms at full load | | Cross-load regulation | Unbalanced loads (e.g., high 12V, low 5V) | Minimal drift |
A Power Supply Unit (PSU) is a critical component of a computer system, responsible for converting Alternating Current (AC) power from the mains to Direct Current (DC) power for the system's components. PSU measurement is essential to ensure that the power supply can handle the system's power requirements. In this article, we will cover the basics of PSU measurement, its importance, and how to measure PSU efficiency. psu measurement
If you don’t have full test gear, even a simple check with a DMM and a known high-load scenario (e.g., FurMark + Prime95) can reveal gross problems. Always cross-check with two measurement points if possible. | Parameter | Why it matters | Good
PSU measurement is a critical process that ensures a power supply unit can handle a system's power requirements efficiently and reliably. By understanding PSU measurement parameters and efficiency standards, system builders and users can select the right PSU for their needs and ensure optimal system performance. If you don’t have full test gear, even