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Question Wattage pick for longevity

W

WillekeurigeKnoflookNL

Junior Member
I'm about to buy a new gaming system and would like to get a solid PSU with it.

I recently figured out that most of the ATX PSUs are most efficient while load is around 50%. Assuming *cough* the PSU will last the longest if it ever only gets to output around 50% of it's rated capacity, I could calculate the total power draw of the system during gaming and then double this amount to get a wattage number for a PSU that would basically always run at 50%, give or take a few %.

Is this a good approach to picking a PSU?
Does this make sence or is this wrong? Or badly explained?
 
Welcome.

This approach is reasonable, but as predicted load/2x capacity increase you'll probably have excessive headroom.
 
It's a reasonable start, but not enough. Pick one with high quality capacitors, usually solid or japanese branded at least on the output filtering, and often reflected by having the longest warranty period that major manufacturer offers. There's more to it, but I'm not going to write an essay for every forum post that asks the same question over again. A web search will find more info.
 
Currently running a PC Power & Cooling Turbo-Cool 1200.

I've had it running my PC since January 2013. (13 + years on the same power supply.)
 
WillekeurigeKnoflookNL said:
I'm about to buy a new gaming system and would like to get a solid PSU with it.

I recently figured out that most of the ATX PSUs are most efficient while load is around 50%. Assuming *cough* the PSU will last the longest if it ever only gets to output around 50% of it's rated capacity, I could calculate the total power draw of the system during gaming and then double this amount to get a wattage number for a PSU that would basically always run at 50%, give or take a few %.

Is this a good approach to picking a PSU?
Does this make sence or is this wrong? Or badly explained?
Click to expand...

Its an OK approach, however i would look at class psu more, like is it a bronze, gold, platinum or titanium rated psu.

The higher the ladder you get past gold, the more efficient it is anywhere from 30-80% on load, Anything higher then the PSU starts putting out insane amounts of heat. But after gold and into the platinum / titanium catigory, the efficiency raiting starts climbing up to around 80% or higher, that is why these psu's cost so much. Also i would not trust made in china psu's, unless its made in Taiwan.

I also would not touch a Gigabyte, ASUS or a MSI PSU even if one was given to me for free. Go with the trusted brands like Seasonic, Corsair, eVGA, FSP Group, Superflower, ETASIS which silverstone uses. I would avoid the other including some of the new case manufactor ones like bequiet, and even take lian li's with a grain of salt as that is made by Helly a Chinese company.
 
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