multiple power supply failures

[Penfookio]

My custom built comp has had some issue over the years. the Biggest one is my 1500 watt power supply failing. Around the same time as that was showing sign that i now know were power supply issues, my duel graphics cards started failing. Well i replaced the power supply to a 650 watt and upgraded to a single r9 270x. But that power supply failed also. ive now replaced it with a 550 watt (budgets suck ). Now  Cool master recommends a 753 watt power supply. But for the last year i have been monitoring my pc's watt usage. The system peaks at 400 Watts normal high graphics gaming it sits at 300-350 watts. So no where near the 750 watts recommended. This new power supply i can here when its under a heavy load which ends up being up near the 400 watt range. Anyone have any ideas why a power supply that never hits peak usage would fail early? i would understand if i was putting a full stress load on it regularly 

 

My power monitor is connected to my surge bar which runs monitor, router , modem and speakers.

 

O yea i build 2 of these pc's both 1500 watt power supplies failed and all 4 graphics cards failed.(the graphics card i think may have been under or over voltaged by the failing power supply damaging them)

 

(Original calculations for the system was around 1000 watts)

[techguru]

My custom built comp has had some issue over the years. the Biggest one is my 1500 watt power supply failing. Around the same time as that was showing sign that i now know were power supply issues, my duel graphics cards started failing. Well i replaced the power supply to a 650 watt and upgraded to a single r9 270x. But that power supply failed also. ive now replaced it with a 550 watt (budgets suck ). Now  Cool master recommends a 753 watt power supply. But for the last year i have been monitoring my pc's watt usage. The system peaks at 400 Watts normal high graphics gaming it sits at 300-350 watts. So no where near the 750 watts recommended. This new power supply i can here when its under a heavy load which ends up being up near the 400 watt range. Anyone have any ideas why a power supply that never hits peak usage would fail early? i would understand if i was putting a full stress load on it regularly 

 

O yea i build 2 of these pc's both 1500 watt power supplies failed and all 4 graphics cards failed.(the graphics card i think may have been under or over voltaged by the failing power supply damaging them)

electrical problem in you house

probably very dirty power

simplest fix is to buy a UPS

better option is to rewire the house..or atleast the few sockets the pc's use

[W-L]

-SNIP-

 

Welcome to the Forums!

 

It depends on the specific power supply you purchased there are high wattage PSU's that are absolute garbage out there that can't supply their rated wattage and can have bad internals or deliver poor quality power and some blank grey box OEM's that would be 10 times better in terms of power quality and internal component. 

 

As techguru mentions poor input power can degrade them in the long run.

[Penfookio]

thanks guys

 

the house i was at when the first supplies failed im out of. It had issues which maybe caused the issue. That house some how had shared neutrals with multiple circuits. Doing simple wire socket change at an outlet i got shocked twice on a circuit that was off before i killed the whole house power.(still dont know how they built it to share neutrals with romex through out the house)