Question UPS Recommendations for gaming PC

[piggy_rambo]

I'm wanting to get a UPS to provide clean power and backup power to my new gaming PC that I will be building soon. I have looked online at power supply calculators and seen that my new gaming PC will use about 600 - 700 watts at full load, I also want to factor in my five monitors and speakers which have a combined power usage of 176 watts. I'm not sure how to calculate how long each UPS will last which is important as I want it to provide backup power for at least 15 Minutes. If anyone could provide some suggestions to what UPS I should buy I would be grateful.

Thanks

 

[ElectrO_90]

Cheap - My APC 1100VA will last about 120 seconds @ 500Watts

You are drawing way too much power to do something cheap and last more than 1 minute.

Quality =
APC Smart-UPS 1500VA LCD 120V with SmartConnect SMT1500C
APC Smart-UPS, 1000 Watts / 1440 VA, Input: 120 V / Output: 120 V, Interface Port USB, SmartSlot.
10 min
Run Time
80 %
Max. Capacity Used
$589.00

 

[piggy_rambo]

Am I right in thinking the APC SUA2200i Tower UPS will provide a max backup time of 29 minutes at 900 watt load? I've linked the product page below.
https://www.apc.com/shop/uk/en/prod...SB-Serial-230V/P-SUA2200I?isCurrentSite=false