Is it true that we can reduce energy consumption when power supply runs at 40-60%?

[exiledbot]

Is it true that we can reduce energy consumption when power supply runs at 40-60%?

Here is my build
Intel CPU 2011 Core I7 5820K 3.3 GHz.
Asus X99-A ATX LGA2011-3 Motherboard
Zotac GTX750 Ti (2GB)
Super Flower Leadex 750W
Platinum Samsung 512GB 950 PRO M.2 PCIe Type 2280 SSD
CPU COOLER MASTER HYPER 212-EVO

So choosing 750w power supply would be better than 400-500 watt power supply right?

 

[fredfinks]

It depends on the efficiency of the PSU. look at jonnyguru.com or other testing sites for what the PSU does. most are at the peak efficiency around 40-60% load.
So yes power can be saved by getting the right model for your workload.

 

[GhislainG]

Is it true that we can reduce energy consumption when power supply runs at 40-60%?

Here is my build
Intel CPU 2011 Core I7 5820K 3.3 GHz.
Asus X99-A ATX LGA2011-3 Motherboard
Zotac GTX750 Ti (2GB)
Super Flower Leadex 750W
Platinum Samsung 512GB 950 PRO M.2 PCIe Type 2280 SSD
CPU COOLER MASTER HYPER 212-EVO

So choosing 750w power supply would be better than 400-500 watt power supply right?

Not necessarily, but according to this review http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=370 that PSU is very efficient between 150W and 600W (you system will draw less than 150W most of the time). If efficiency is really important, than a lower power PSU like tested here http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=446 would be slightly better at low loads (which obviously are less important than high loads).

 

[exiledbot]

Thanks guys.