[SOLVED] What happens if u have a under power PSU?

Solution
A pc only draws what it needs, no matter what psu. So at idle you'll see very low draws, 50w or less at times. No big deal for any psu. Light usage even on a RTX2080ti and 9900k is the same, only using a fraction of what's available at the psu. It's only when running high % use, hard driving the cpu and gpu that things change. Sudden spikes can over draw smaller psus, psus pushed to limits can fail to supply enough voltage or amperage so wattage draws from the others, creating issues, even total failure where the gpu shutdown due to lack of power. It's simply bad news all around to use an under-rated psu.
D

Deleted member 14196

Guest
not good things usually. and if a poor quality psu gets overloaded, well, it can take out just about every component with it when it fails
 

atljsf

Honorable
BANNED
if you put a big load on a low power psu or it turn itself off or it could burn itself, melt cables inside, nothing nice

if you don't know the brand of the psu, is probably a bad psu, replace psu for a good quality psu to avoid fire, burnt parts or sudden shutdons of the pc
 

Karadjgne

Titan
Ambassador
A pc only draws what it needs, no matter what psu. So at idle you'll see very low draws, 50w or less at times. No big deal for any psu. Light usage even on a RTX2080ti and 9900k is the same, only using a fraction of what's available at the psu. It's only when running high % use, hard driving the cpu and gpu that things change. Sudden spikes can over draw smaller psus, psus pushed to limits can fail to supply enough voltage or amperage so wattage draws from the others, creating issues, even total failure where the gpu shutdown due to lack of power. It's simply bad news all around to use an under-rated psu.
 
Solution