EXT64 said:
Hi lynspottery,
The problem is that some computer power supplies are more sensitive to the quality of the incoming power waveform. Your wall AC power is a pretty good sine wave (with noise of course). When you lose power, your UPS is then extracting power from a DC battery. It must then convert this power to AC. How well it converts DC to AC depends on the quality of the UPS inverter.
Cheaper UPSes will approximate sine waves with square or trapezoidal waveforms. For many power supplies this is ok, however some of the newer high efficiency power supplies don't like the squared off signal.
To stay in about the same price range as the unit you have, I would suggest trying the CyberPower CP1350PFCLCD or CyberPower CP1000PFCLCD. These units, while still not perfect sine waves, are designed to be good enough for sensitive power supplies. I have both of these units and have had no issues with a variety of high end high efficiency power supplies. That is no guarantee that it will work of course, but hopefully it will. Be sure as soon as your get the UPS to run it in test mode to ensure that the computer can run on it, so if it still fails you can return it.
Hope that helps a bit, and let me know if you have any further questions.
I actually was talking with some guild mates of mine from SWTOR and APC was mentioned as a very good alternative to the CyberPower brand. I also thought that the only way to test a unit like this was to power up the pc, then pull the plug out of the wall socket to see if the pc stayed powered on without problems. Did not know there was a better way to test these things. I looked in the manual I received with the unit I just purchased and did not see any test function listed.
I was looking at this: Back-UPS Pro APC Power-Saving Back-UPS Pro 1000 APC Back-UPS Pro, 600 Watts / 1000 VA, Input 120V / Output 120V , Interface Port USB
Would this unit work as well?