Hello: I have had a few power outages in the last few days and would like to buy a UPS.
I have a 1300Waat psu
I spend 900 watts on mining rig.
Do I buy a UPS that handles up to 1300watts or around 900 watts? Any suggestion out there? Thank you for any answers.
What is the point of having a UPS, if your power is down, so is your internet access. Just get a surge protector if you are worry about your equipment. UPS can only last maximum 2 hours, if you get an expensive one.
Wrong.....my power goes out quite often & randomly for 5 seconds - 5 minutes,my UPS keeps my miners running & internet up

It also "smoothes" the power,keeps spikes from damaging my equipment.
If the power is down for longer,well I'm SOL

I'd go with a 1500 watt,ALWAYS add 20% to your total.You don't want to stress your PSU or your UPS

Something like this would do just fine:
http://www.walmart.com/ip/Cyberpower-OR2200LCDRTXL2U-2200VA-UPS-AVR-2U-RM-T/23140122