250W System Unit and 520W PSU, will it have a long-term bad effect on the PSU?

[Charlise]

Specs:

INTEL CORE i3-7100 3.9GHz
ASUS EX-H110M-V
KINGSTON HYPER X FURY 8GB DDR4 2133MHz
ZOTAC GTX 1050 Ti MINI 4GB GDDR5 128BIT
SEAGATE 2TB 7200RPM

So, with the specs listed above, the system unit will consume about 211W according to pcpartpicker.com, I just want to know if it will have a negative effect on the PSU because it will just consume less than half of the wattage of the PSU that I'm going to get, the actual PSU:

SEASONIC S12II-520W 80+ BRONZE

Of course there are PSUs with lower wattage than that but they are all generic and I don't wanna risk my system cheaping out on the PSU. The only trusted PSU with a lower wattage here in my place is:

CORSAIR VS450

Yep, it is a Corsair and it has a lower price and lower wattage that will be sufficient with my system unit, but when I looked at the PSU Tier List, it is listed in Tier 4, or in some other sites, Tier 6, so I'd rather pay for the extra bucks with the more trusted PSU model that I mentioned which is the Seasonic model. So, back with my question, will it have a long-term negative effect if I were to buy that PSU since my system unit will just consumer lesser than half of the PSUs wattage? Thanks guys!

 

[raisonjohn]

Stick with the Seasonic PSU model you will get. There will be no problems even if your rig is consuming less than half of the PSU's rated power. Note that the Seasonic S12II-520 provides 480W at +12V rail (where your components will draw much of the power from), while the Corsair VS450 (not recommended poor-quality entry-level and discontinued model) only provides 408W at the +12V rail.

Sweet spot of power efficiency is drawing around 40% to 60% of the PSU's rated load. So, with the Seasonic S12II-520, you'd get better efficiency if your rig is drawing ~190W (~40%) to ~230W (~60%).

It won't have long-term negative effects if you are just drawing less than 40% (just, slightly lower efficiency but lesser fan noise/speed).