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What Voltage should i use for my Power Supply?

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August 5, 2013 9:25:27 AM

Hey all. I apologize if this is somewhere, i couldn't find anything :/ 
Anyways, I have a COOLMAX V-400 400W ATX v2.01 Power Supply. Nothing really special, Don't have a great set up. But, in the back of the PSU there is a switch between 115V and 230V. I believe my system is getting a little over heated when playing games for a long time, I tried to switch the little nob to 230V, it got louder so i assume it is working harder, But my computer wont boot up. It only boots up when it is on 115V. What should i do?

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August 5, 2013 9:32:06 AM
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That switch tells the PS which type of power is coming in from the wall. It can only use what is being provided. Changing it to the higher value would cause your system not to boot at all.

In the United States, Alternating Current (AC Power) is provided in the 120V range. So if you are in the USA, you would use the 115V switch position.
Europe and other countries use the 230V range so if you took your computer to one of those location you would have to switch to the 230V setting.

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August 5, 2013 9:42:04 AM

I would say go with 115V because it works.

As for voltage, it is region specific, as poster above has described. Technically, voltage switch has nothing to do with cooling of power supply.

If heat problem exists, why not buy a new power supply, above wattage of existing one?

Also, why would you worry about voltage? Mains in houses are built with specific voltage requirements for amperage and isolation. Running higher voltage will certainly either destroy wiring or would at least cause you to change fuses, nor is it a simple matter of choosing voltage usually as city utility companies are in charge of adding/removing power lines.
August 5, 2013 9:43:42 AM

rgd1101 said:
You are lucky you didn't blow the PSU when you switch the volt.
http://en.wikipedia.org/wiki/110V#Voltage_levels

Nearly shit my pants haha, I feel stupid :/  That would be the last time i check something before doing it....I usually never have good luck with these things lol.

August 5, 2013 9:44:12 AM

Dhamilton said:
That switch tells the PS which type of power is coming in from the wall. It can only use what is being provided. Changing it to the higher value would cause your system not to boot at all.

In the United States, Alternating Current (AC Power) is provided in the 120V range. So if you are in the USA, you would use the 115V switch position.
Europe and other countries use the 230V range so if you took your computer to one of those location you would have to switch to the 230V setting.


Thank you very much, i appreciate it alot. :) 

!