Tier A requirements: • Must have a thorough, reputable review with all protections tested. • Must have the following protection, with 0 failures on any review: OPP, OCP on every rail, SCP, OVP, and OTP. • Topology: LLC or phase-shift resonant primary and DC-DC secondary. • For fans: ...
Tier B key points: • Platform and key components with OCP and OPP have to be tested and documented. • Must have core protections: OTP (over-temperature), OPP, OCP on every rail, SCP and OVP. • Use approved topologies: ACRF, LLC, or phase-shift resonant on the primary and DC-DC o...
If it's what you can pay, you are good with a C: • Over-current (OCP) and over-power (OPP) protections must be validated by testing. • The unit must have core protections: OPP, OCP (not required for the +12V on single-rail designs), short-circuit protection (SCP), and over-voltage ...
Tier D are the first acceptable power supplies, ideally for simple computers with iGPU: • Requires over-current (OCP) and over-power (OPP) protections to be tested. • Must have core safety protections: OPP, OCP (not required for +12V on single-rail designs), short-circuit pro...
Tier E contains the following power supplies: • Used for units with limited or missing quality data. • Includes PSUs with mediocre construction, weak electrical performance, or noticeable design flaws. • These models show problems but aren’t considered dangerous or bad enough to be p...
Tier F lists power supplies that should not be recommended. Key reasons include: • Missing or non-functional safety protections (risking catastrophic failure). • Units that are unreliable or unsafe for their intended use. • Very poor electrical performance that fails to m...
PSU Tier List