CyberPower UPS for Late 2012 27-inch Core i7

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i looking ups late 2012 27-inch core i7 , see recommendations cp850avrlcd cyberpower intelligent lcd series.

sufficient? worry flickering experiencing worsening quality of power grid.

apple skipped late 2012 27-inch core i7 power consumption rating. stating max power consumption 2011 model (200 w) , 2013 model (229 w).

goal: clean power imac, battery power @ least 10 mins , auto shutdown on last minute of battery life.
 

is imac connected via surge protector?

how old building use in?

have had cp1000 little on 2 years. i've got mac mini server, external drive array, router , modem connected it.

os x recognizes no issues , mini shuts down when outage has occurred. has been able provide wifi during few long outages well.
 


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