Do I need a UPS

spyguy

Honorable
Dec 3, 2017
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10,795
I have a 7700k and gtx 1080. I use an almost 4000 joule belkin surge protector. I live in louisiana and have no idea if the power is "dirty". I almost never have flickering or power outtages. Ive read mixed opinions on whether a ups is needed, and have even read some claim its a sham. If you think I do need a ups could you provide a link to a good ups and at least your recomendation as far as wattage for the ups and whether or not the ups should be plugged into the surge protector.
 
Solution


1500 VA.

The AVR (Automatic Voltage Regulation) circuit in the UPS handles undervoltage brownouts and overvoltage surges.

luckymatt42

Upstanding
May 23, 2018
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I'd say the UPS is certainly cheap insurance against any number of nasty things. You can get a great one for less than $100. There is NO need to plug UPS into surge protector. Most if not all decent UPS have surge protection built in.
 
The UPS is a surge protector, don't daisy chain it.

In regards to if you need one. If whatever work you do on the computer is critical to you or if your area has lots of dirty power (flickering, brownouts, blackouts) then its a good idea. If not then no not really other it simply being nice to have.
 


Your PSU has "undercurrent protection"? I highly doubt that. Under voltage protection, then I would believe it.

If your PSU has insufficient holdup time it can lead to a scrambled storage device if a write operation was being performed at the time of the power interruption.
 

spyguy

Honorable
Dec 3, 2017
291
1
10,795
Yea my mistake under voltage protection not under current. Also over voltage, over power, and short circuit protection. Im really confused about what va ups would be needed for 850 watt psu.
 


1500 VA.

The AVR (Automatic Voltage Regulation) circuit in the UPS handles undervoltage brownouts and overvoltage surges.
 
Solution


A UPS does not push power to a PSU. The PSU only draws the power that it needs from the UPS. For example, if the 850W PSU only needs to draw 400 Watts AC to power the system then that is all that it draw from the UPS.

Use a pure sine wave output UPS. A stepped sine wave or other waveform type UPS may not be compatible with your PSU's APFC (i.e. Active Power Factor Correction) circuit rendering the UPS useless.

If you choose to use a non-sine wave UPS you would need access to a non-sine wave UPS to test compatibility with your specific PSU model.