Also sold under Leadman Power and Powmax brand names. Below average build quality.įactory Recall. Primary capacitors are 85C instead of 105C. Hodge podge of second and third tier capacitors. Non-primary rails have very mediocre voltage regulation. Loose screw securing heatsinks.įailed to power up. Plastic insulator worn down due to soldering. Standoff screw hole missing for upper left corner of mainboard. Specifications on retail box and psu do not match. First unit burned one minute into testing at 350 watts High Ripple and noise suppression levels. Limited number of power cable connectors. Mediocre efficiency.įalse power supply label. Advertised voltages and amperages are incorrect. Only one SATA power connector and no video card power connector. No required filtering coils in secondary. Ripple and noise suppression out of spec. Only one video power cable with two connectors.Įxploded during testing. Would not turn on when EPS12V connector was used. Only one SATA power power cable with two connectors. +12 voltage dropped below minimum allowed. +3.3V, +5V, and +12V rails went out of spec. Voltage regulation failed on -12V rail during light load test. Ripple and noise high at 550 watts.ĭid not meet Bronze effcieincy at load. Poor standby efficiency.ĭid not meet Bronze effcieincy at load. Box marketing claims certifications the unit doesn't have. Won't do 550 watts, barely does 350 watts. Please read the power supply reviews for detailed descriptions of problems and issues. Out of spec ripple and noise suppression.
![johnnyguru psu tier list johnnyguru psu tier list](https://images-na.ssl-images-amazon.com/images/I/611s3Wxjz4L._SL1200_.jpg)
There may be additional brands and models that would qualify for the psu lemon list but they are not listed because they were not reviewed or subjected to rigorous testing.
![johnnyguru psu tier list johnnyguru psu tier list](https://i.redd.it/4n2tz82k2h641.png)
![johnnyguru psu tier list johnnyguru psu tier list](https://i.imgur.com/1ihDWlH.png)
NOTA BENE - Only brands and models that were reviewed and tested by competent hardware review sites are listed. To find a high quality power supply for your computer that is safe, stable, and reliable please check the Power Supply Recommendations List. The PSU Lemon List includes descriptions of problems found and links to the hardware reviews that discovered the psu problems, issues, and flaws.
Johnnyguru psu tier list Pc#
Friendly reminder than anyone can publish/derive our work anywhere (for non-commercial use) as long as the license is intact (which is CC BY-NC-SA 4.0), any changes are noted and there source (i.e this site) credited.Īs always, any questions, suggestions and critique are welcome but for faster answers please consider joining our Discord.PSU Lemon List PC Power Supply Problems and Issues The power supply lemon list identifies psu's to avoid.
Johnnyguru psu tier list full#
You can read the full changelog either at the end of the PSU Tier List article itself or in the accompanying spreadsheet, along with the methodology and other info.Īlso, please take note that due to various reasons, the main of which being the lack of time and willingness to do formatting from the scratch (since it’s vastly different between the site and forum engines) – tier list forum threads are likely to be abandoned, unless someone else takes updating duties over. As usual, a whole bunch of added and moved units.Move some previously tier D/E units to newly added tier F to highlight major issues.Stronger methodology requirements for tier D to split off undesirable models to tier E.Stronger methodology requirements for tier A to better reflect it’s high-end status, thus moving some previously tier A units to tier B.
Johnnyguru psu tier list free#
Filling out of the spreadsheet is still in progress, so in the meantime if you don’t see some unit neither in the tier list itself nor in the spreadsheet – feel free to ask about it in the Discord. The tier list position of snipped units would be still available in the spreadsheet. Improved readability by removing a lot obsolete/irrelevant and regional units, thus also removing gray color.Our PSU Tier List was updated to revision 15.0, here’s a rough outline of the changes :