Does a too powerful PSU hurt your pc?

[Statteboii02]

I'm planning a pc build that's gonna draw about 400w. however the psu that i have in mind to buy is a 850w gold rated psu. is it bad for the pc if i have a few hundred watts from the power supply? or does it not matter how many watts the psu can support? i would be very grateful for an explanation

 

[Deleted member 2078981]

Over doing it never hurts if it's a high tier psu. You will still use more power if the psu is capable of more, regardless of how much it needs. But no, it will only hurt your wallet.

 

[turkey3_scratch]

It really doesn't matter. Efficiency can be affected, but it really doesn't matter, and could actually mean a longer-lasting unit possibly. Quality of the unit itself is most important, though.

 

[Dark Lord of Tech]

I have a RMX 850 a buddy just donated to me and I just put it in a C70 case with a 960 , going to upgrade when the new Nvidia Cards come out , doesn't hurt.

 

[coozie7]

No, it's perfectly safe, and most power supplies are at their best efficiency at <>50% load. Only possible downside is the increased cost compared with a 650-700Watt unit.
As Tate56 suggests, a high tier: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html unit of lower Wattage is preferable to a lower tier part with higher output.

 

[Statteboii02]

It really doesn't matter. Efficiency can be affected, but it really doesn't matter, and could actually mean a longer-lasting unit possibly. Quality of the unit itself is most important, though.

ok thx