the Prime series (including their latest state of the art fanless 600W titanium) have a design flaw they have bad transient response (which in some cases can even trigger a protection shutdown)
conversely the Focus series has *relatively* good transient response (minor rails still problematic but nowhere near as bad as the 12V rail on the Prime series, also minor rails are minor importance)
the Focus still has - like the Prime - great voltage regulation & ripple suppression BUT unlike the Primes it suffers from dangerously high inrush current (at least on 220V) and - for some reason - dangerously high thresholds for overpower and/or overcurrent protection (bad design choice go figure)
overall Focus is still better cause transient response is important especially on the big 12V rail
ps. and if you wondering about Corsair: while modern high end Corsair don't have the above mentioned flaws of the Prime & Focus seasonics, they do have one YUGE flaw: they overheat so you better avoid those at least the RM & HX models
Last edited by pulverizor; 01-30-2019 at 12:36 PM.