Tier one - The highest quality and most stable PSUs available on the hardware market today. Highly recommended for any situation -
This statement isn't accurate because of the discontinued/obsolete models listed.
Antec Signature series <===== Discontinued
Enermax Revolution82 <===== Not listed anywhere in Enermax's current or legacy product lists
Sapphire Pure series <===== Sapphire is out of the PSU business
Seventeam ST series (greater than 600 watts, SSI, V2.91) <===== There's no supporting evidence that Seventeam should even be in Tier 1. What is an ST series? Every Seventeam PSU model number begins with the ST-
prefix accross all (i.e. at least 36) of their series.
SilverStone Decathlon (DA) and Olympia (OP) Series <===== both series are Discontinued
SilverStone Zeus ZF and ZM1200M <===== Discontinued
Ultra X3 greater than 1000 Watts <===== Discontinued - Uses All Teapo capacitors. 7 year old technology doesn't qualify for Tier One when compared to the electrical performance of currently available Tier One PSUs.
Super Flower Leadex Platinum series should not be in Tier two class A. It should be in Tier One. This is supported by unbiased expert reviews.
Super Flower Leadex Gold should also be in Tier One and is supported by unbiased expert reviews.