In-house, Seasonic has never produced bad PSU.
How does that matter ?
yes, outsourced their S12III to RSY. Why they did that - i don't know. But that is just one PSU line
What about A12 ? B12 ? G12 ? S12II EVO ?
But when it comes to CWT and how much crap they have produced, well, you can fill a warehouse + then some with all the junk that has come out of CWT.
So if Seasonic sells junk under their own brand, regardless of whether it's outsourced or not it's fine, but if CWT - an actual OEM that has capacity to make whatever their clients ask them to make even if it's junk - that's no good ? I don't get your logic here.
PS: Also, Seasonic actually tried to create a budget brand a while ago - Hydance, but probably figured out that no-one in their mind would buy that
<Mod Edit> so moved it under the main brand since surely, if it has Seasonic on the label that's a good product. XFX wasn't as bright and their XT/TS series using the same designs were a disaster, which probably was one of the things contributing to their downfall.
If PSU OEM has specialized on few platforms, fine tuning them, making them solid and reliable, there is no need to murk the waters with dozens of different platforms, ranging from junk to good, like CWT does.
Fine tuning as in sitting on the same stuff for several years and refusing to make customizations according to client's requests even if that actually would improve the product ? Seasonic simply lacks design and production capacity to have more than these two platforms on hands (and for customization too, evidently, judging by their unwillingness to do so), they don't have any budget stuff to offer so it's unknown whether they would've have actually started to make budget junk as CWT does if they could. But we do know that they still sell junk, even if they oursource it, because then people would say 'eh, it's not actually made by Seasonic so it doesn't matter', it does matter.
Also, Seasonic is the ONLY PSU OEM, who offers 12 years of warranty to their top-of-the-line PSU series: PRIME.
Which costs higher than comparable products from other OEMs including CWT so you're already paying more money for 2 years longer warranty. What's the point? Warranty is not a product of quality. CWT doesn't sell their designs directly, they have enough clients on their hands without getting into DIY market, what their clients do is on these clients. Also, it's not like it's a good idea to continue using 12-years old PSU in the first place, 10 years is already on the edge, and it's not just about capacitors aging. Like, it would've been good to have more PSUs with longer warranty but there are reasons why that doesn't happen, and it's not Seasonic superiority.
PS: And FIY, Seasonic PRIME Gold sub and including 750W are literally the same as Focus Gold except for different, non-Y-split cables, they literally just charging extra for the same product for raising the warranty by 2 years.
PSU manufacturers usually outsource components from other manufacturers. Research which company they outsource their components and if it's found to be substandard, then avoid that model. PSU sellers then just slap their label on top of the PSU as part of rebranding.
This is right attitude.
However the danger lies behind if they start outsourcing components like capacitors of substandard quality from questionable manufacturers like "Great Wall" PSU
This is not. Anything i've said about CWT applies to Great Wall too, they're a very big OEM, way bigger than Seasonic, it's only natural that they have more options for their clients, if you ask them to make junk they will make junk, if you ask them to make a good PSU they will make a good PSU. Although it's always good to have another layer of QC control, like Corsair actually does. Or like Antec and EVGA doesn't. Regardless of the OEM.
PS: In essence, what you people are saying is 'Seasonic and Super Flower PSUs are better than CWT and Great Wall because they're smaller'. Their PSUs are good for the most part because they focus on mid/high-end market and you gotta make something even remotely good to sell something there. They don't have bad PSUs because they simply don't have resources to focus on budget market too. But that neither means that bigger OEMs can't make good PSUs, nor it means that smaller OEMs would only come up with good designs. It's all about the each specific resulting product.
So read reviews - yes, but don't just stop at "OEM : Seasonic" and assume that it's good, or bad if it's Great Wall or smth. And don't assume that the product would be good if other products of this brand were if there are no actual reviews on this specific product you're looking at. True for any brand really, but say, EVGA (and recently, Antec too) is especially guilty of just throwing random stuff at the wall hoping that something sticks. Super Flower-made unit did stick, most of the rest of EVGA offerings are either junk or there are zero reviews to say anything about them. If there are no review on a PSU then it should be assumed junk by default regardless of the brand or OEM.