On testing

From https://www.personal-view.com/talks/discussion/20370

PSU orientation in low position:

Can save your PSU capacitors life or lower temperature inside and save other capacitors and stuff.

PSU capacitors, philisters and science aka legend of Japanese caps

If you look around, people made lots of tier lists, for example for PSU capacitors - https://www.tomshardware.com/reviews/power-supplies-101,4193-5.html .

Yet it is completely philister, anti scientific point of view.

First - it is idiotic and static brand generalization. Each of brands have lot of capacitor lines made for different purposes and with different construction and prices. And it all changes constantly. Plus each brand has periodic problems with some specific capacitors, usually not big, but shit happens.

Second - properly selected and cooled 105 degrees Chinese/Taiwanese capacitor can live 10-20 times more compared to improperly placed 85 degrees Japanese one.

Third - capacitors life also depend on quality of PSU design, air flow, ripple, etc.

Fourth - top PSUs usually are designed for long work under load close to 90-100% of their specifications.
Yet, heat generated inside cheap Bronze class PSU will be around 30W for 300W real load with 550-600W PSU, and such PSU usually have much more space.

For top expensive Titanium class PSU that many get to work at 570W (multiple top GPUs and such), heat will be around 47 watts with more crowded construction and more silent fan. Such PSUs really need top capacitors for long life.

Simple example, OCZ (now out of business) made ModXStream PSUs that liked to fail right after warranty

Initially they used more reputable (among Taiwanese :-)) Teapo LH 85C capacitors. Yet they failed and fast. Most probably reason - very low fan speed and bad location with two hot yet flat heatsinks.

After this they switched to Transcend Electrolytic (Trec), not small company, but not regarded at all. Yet it behave much better.
All PSUs I saw with them worked for >6 years without hitch.

Note that press also have small gains from cartel agreement that exist among Japanese manufacturers for long long time -https://www.personal-view.com/talks/discussion/19266

You should never listen to such channels as they tell you about consumption and choosing proper PSU.

Why?

Because main things that define PSU are capacitors, diodes and transistors. All of them will be much better if you choose more powerful PSU of reputable brand (usually their specs are directly proportional to PSU power rating). Also heatsinks are usually better.

Better PSU also have better fans usually and different fan curve. If you add all previous - modern good brang high power PSU is usually literally silent (250-400 rpm of 14cm fan) up to 600-800w.

I am not even talking that if you decide to add new power hungry GPU (>300watts for modern one) you will be stuck as it is very hard to sell used PSU for any good price.

So, in reality you must do opposite - choose good PSU, but watch and wait for nice sales event. 30-40% sales happen periodically for superb PSUs.