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APC ups 540W enough for my computer?

Last response: in Components
April 11, 2010 11:31:18 AM

Hello! Every now and then I have power cuts at home, I would like to know whether the following ups of 540W is enough for my gaming rig:

I'm going to buy another 5850 graphics card (i.e. crossfire) in a year or so.

According to "eXtreme Power Supply Calculator" my pc requires 396W at full load.


More about : apc ups 540w computer

April 11, 2010 11:42:43 AM

Sorry, I wrote it in my public profile but it doesn't show up here :D 

Here it is:

Corsair 850TX
Core i7 930 2.8 Ghz
Gigabyte x58A-UD3R
OCZ DDR3 Tripple Channel 6GB
Sapphire HD 5850 Crossfire
WD Caviar Black Sata III
Nox coolbay devil edition

I just want 5 minutes to shut everything down
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April 11, 2010 1:34:46 PM

My Corsair PSU has "active PFC", I think the UPS I mentioned does not have a true sinusoidal signal and may not work, right?
April 29, 2010 1:35:16 PM

The unit that you selected will not work with an active PFC power supply. You are right that the Back-UPS does not out put a sine wave. You need to get yourself a minimum of an APC Smart-UPS 750VA LCD. This is the smallest unit made by APC that out puts a sine wave. This unit is a data center unit, sine wave output, avr boost/drop and excellent surge protection. Give it a try, you'll see how well it works.