Tier A- Power Supplies

↪ Notes: Fan is of questionable quality. Yate Loon DBB. Loose 12V transient response.

↪ Notes: Cost-down SSR-FM platform. White 750W is available.

↪ Notes: 2 850W samples died in testing during OPP/OCP evaluation.

↪ Notes: OPP is set way higher than necessary and isn't reduced even under high operating temperatures. Very poor 200% excursion response.

↪ Notes: Platform is well reviewed although no direct transient response data.

↪ Notes: Has purple heatsinks for glam. Loose load regulation on 5VSB rail with middling 12V excursion response.

↪ Notes: One review showed ripple on the 12V rail at 62mV for the 1600W, other samples were within 50mV. 5VSB OCP is set high.

↪ Notes: Costdown GX-F

↪ Notes: Ripple suppression, while within the limits for tier A, isn't as good as other units in its class. The OCP trip points need to be reduced on all rails.

↪ Notes: One EPS cable shares the same 12V rail with a PCIe cable, low hold up time, transient on the 3.3V rail/OPP needs tuning.

↪ Notes: Very high inrush current, poorly tuned protections on the minor rails; otherwise decent electrical performance.

↪ Notes: Protections need tuning, 5VSB regulation doesn't quite qualify for A tier.

↪ Notes: Ripple on 12V was shown at 52mV, all other requirements for tier A proper are met.

↪ Notes: Overall performance is not that great despite a capable platform. Platform just needs to be tuned better.

↪ Notes: 122mm depth (extremely compact.)

↪ Notes: Overall performance is not that great despite a capable platform. Platform just needs to be tuned better.

↪ Notes: 13 year warranty. 5VSB OCP still allows for extremely excessive ripple. Good performance otherwise.

↪ Notes: Cost-down Ion Platinum.

↪ Notes: Fails EMI testing, 2 EPS connectors on one cable, minor rails are either failing or near failing with regards to transient response.

↪ Notes: One EPS cable with two connections, transient response on the minor rails are very subpar, OCP needs tuning per Aris' testing.

↪ Notes: The OCP triggering point on the 5VSB rail allows for extremely excessive ripple; 5V rail hot triggering point allows for a voltage drop out of spec.

↪ Notes: The OCP triggering point on the 5VSB rail allows for extremely excessive ripple; 5V rail hot triggering point allows for a voltage drop out of spec.

↪ Notes: Power cord isn't available unless bought with the unit, extremely noisy, missing tiny quality of life features.

↪ Notes: Protections need tuning and mediocre ATX 3.0 transient response; overall performance is dwarfed by the CWT-built Titan Gold.

↪ Notes: OCP is set high on 3.3V and 5VSB, 5VSB voltage regulation >3% at 4.87%, mediocre excursion response in the 200% test. High inrush current.

↪ Notes: Minor rails' OCP is set lower compared to the CWT-built high-wattage models. 650W is noisier than the 750W on account of using a DBB fan.

↪ Notes: Extremely quiet operation; however OCP is set high on the minor rails.

↪ Notes: Transient response on the 3.3V rail is either failing or near failing. Fan profile is quite aggressive.

↪ Notes: Dual system. Load regulation on 12V could be better.

↪ Notes: Mediocre load regulation on the minor rails, and poor excursion response in the 200% test. The OCP and OPP triggering points are set too high on all rails. 1000W model has high inrush currents. Good performance otherwise.

↪ Notes: Mediocre load regulation on the minor rails, and poor excursion response in the 200% test. The OCP and OPP triggering points are set too high on all rails. 1000W model has high inrush currents. Good performance otherwise.

↪ Notes: Mediocre load regulation on the minor rails, and poor excursion response in the 200% test. The OCP and OPP triggering points are set too high on all rails. 1000W model has high inrush currents. Good performance otherwise.

↪ Notes: ATX 3.0 transient response could be better. 5VSB OCP is stupidly high.

↪ Notes: Black model has white line accents, compared to V3. Stupidly high inrush current, mediocre transient response, minor rails' OCP need tuning.

↪ Notes: White versions of Focus (yes) Gold / Platinum and Prime Titanium.

↪ Notes: The OCP (+12V and 5VSB lines) and OPP triggering points are set way higher than necessary. Mediocre transient response. 7 year warranty.

↪ Notes: Fanless

↪ Notes: Pro version - black casing instead of white. Pigtail PCIe cables for the 650W. Cost down version of the Pro ARGB.

↪ Notes: Poorly tuned OCP & OPP, 20AWG pigtails on PCIe connectors. 750/850w has a dual 8 pin to 600W 12VHPWR cable available for purchase.

↪ Notes: Chinese caps, 20AWG gauges on the EPS/PCIe cables; 5VSB regulation doesn't quite hit A tier specifications.

↪ Notes: Poorly tuned OCP triggering points and 20 gauge wire for the far-end PCIe connectors. Treat capacity as ~100W lower than advertised.

↪ Notes: Unusually tight OCP triggering points and 20 gauge wire for the far-end PCIe connectors. Treat capacity as ~100W lower than advertised.

↪ Notes: OCP on 3.3V rail is not properly implemented.

↪ Notes: 1300W 5VSB voltage regulation doesn't quite hit A tier performance.

↪ Notes: Aggressive fan profile, ~40+ dbA output.

↪ Notes: Questionable fan quality, two EPS connectors on the same cable. Otherwise qualifies for A tier based on performance.

↪ Notes: OTP claimed; tested working in other GPR-based units in similar configurations.

↪ Notes: Excellent noise profile despite uncompetitive overall performance. Poor load regulation on the 5VSB rail and poor transient response on 3.3V.

↪ Notes: OPP works, OTP claimed; tested working in other GPR-based units in similar configurations.

↪ Notes: OCP is set much higher than necessary on all rails.

↪ Notes: Quite loud under full load, ~39dbA

↪ Notes: 5VSB OCP needs tuning (59mV ripple); An EPS cable can fit into a PCIe socket and vice versa, but they're not electrically compatible.