750W PSU with a 600W UPS?

Solid_Snake3

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Oct 22, 2012
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Hey guys, I'm here again with a difficult predicament. I have a 750w psu, and sometimes the power goes out for a few seconds at home, which is rare, and even those few seconds are enough for my desktop to shut down. So that's why I'm looking at a UPS. The one I found is 600w. Now, will the UPS be able to handle my 750w PSU? My current PC load is less than 600w, so why do I have a 750w PSU you ask? For future upgrades, if I ever want/have to. I wouldn't have a problem replace the UPS if the wattage is higher than the 600w UPS after my upgrade. So my question is, will a 600w UPS be able to handle a 750w PSU, if the current watt load is less than 600w? Thanks in advance.
 
Solution
Most UPS manufacturers recommend a UPS that is rated higher than your power supply because according to them, some power supplies can pull the maximum power from the wall (and the UPS) when first turned on. Whether that is actually true or not, I don't know. However, I had a 600 W Zalman power supply that would cause problems with an APC 600W UPS (switching to battery), so I'd be a bit worried.

Also, don't forget about the load that a monitor would place on the UPS.

Casey
Hi

is your UPS 600 Watts or 600VA ?
(there is a difference unless your PSU has power factor correction)

Most of the time your PC will be using less than 500W unless using the maximum 3D effects on your GPU
so there should not be a problem.

what graphic card do you have ?

equally important how long does the UPS run for at 600VA and again at 500VA or 400VA ?
(depends on battery size)

regards
Mike Barnes
 
Most UPS manufacturers recommend a UPS that is rated higher than your power supply because according to them, some power supplies can pull the maximum power from the wall (and the UPS) when first turned on. Whether that is actually true or not, I don't know. However, I had a 600 W Zalman power supply that would cause problems with an APC 600W UPS (switching to battery), so I'd be a bit worried.

Also, don't forget about the load that a monitor would place on the UPS.

Casey
 
Solution