At least someone able to get answer from evga, they ignored my question about this same thing.
 
http://forums.evga.com/UPS-backup-power-m2614025.aspx
 
 

EVGATech_LeeM
Do EVGA Power Supplies support UPS backup devices that support Line-Interactive AVR UPS which uses a simulated/artificial sine wave?
 
Edit:  To clarify the FAQ a bit, the main source of potential harm from Active-PFC and UPS devices comes from the rush of power that spikes when the UPC flips from the wall outlet to the backup.  If the UPS device has a large fluctuation outside of what the PSU's Active-PFC can handle, then you might see some damage.  However, all of EVGA's Active-PFC power supplies are well-within the margins to tolerate these kinds of voltage fluctuations.  I'd generally recommend purchasing a good quality brand and unit, however, to make sure those sorts of issues have a low probability of occurring.  

EVGATech_LeeM is correct that the main source of potential harm is from power spikes. Having a good battery backup is essential in saving your computer from possible damage from these large fluctuations or spikes from the power source.
There is however another condition that occurs and can be unseen and cause severe damage to Hard Drives. That condition would be a Brown Out where the power going to your computer from a 110 volt power source is less than say 99 volts. Your computer will still work but the life of your hard drives is significantly decreased. There are volumes of information regarding this topic.The best solution to stop a Brown Out would be to purchase a good battery backup that is line interactive. The cheap UPSs only turn on if there is a blackout, total loss of power and offer protection from spikes. The pure sine UPS will be the most expensive, but if you get one that is line interactive you will prevent the small drop in power to your computer and extend the life of your hard drives.
 
Thanks for the post EVGATech_LeeM

EllBrad
Because it's a SSW and a standby unit, means no brownout protection? This one I bought CyberPower EC650LCD manual claims it will switch to battery in event of a brownout

Then you should be fine. There a plenty out there that kick in when there is a power loss, but do not constantly monitor the current. If the model you have monitors the power and assists if you have a lower current then you should be fine. Many models merely turn on where there is a power loss!

HeavyHemi

EllBrad
Because it's a SSW and a standby unit, means no brownout protection? This one I bought CyberPower EC650LCD manual claims it will switch to battery in event of a brownout

If that is on the system that is in your sig, it's too small. Its max rated output is 390 watts. Your UPS should be sized, at the bare minimum, at your expected max power draw.

I've tested my system using a kill-a-watt and it did not draw more than 320 watts running fire strike

HeavyHemi

EllBrad

HeavyHemi

EllBrad
Because it's a SSW and a standby unit, means no brownout protection? This one I bought CyberPower EC650LCD manual claims it will switch to battery in event of a brownout

If that is on the system that is in your sig, it's too small. Its max rated output is 390 watts. Your UPS should be sized, at the bare minimum, at your expected max power draw.

I've tested my system using a kill-a-watt and it did not draw more than 320 watts running fire strike

Okay, but I don't know why you would use a UPS sized smaller than your PSU. In any event, as long as you have it set up to shut down your system automatically it will work as a large surge protector.  Otherwise you'll only have a couple minutes to shut your system down until the UPS kicks off. In a year or so as your battery ages that time will be cut down to almost nothing. I live way out in the boonies so power glitches are pretty frequent. I'm running a CyberPower 2200va...The quiet hum and 70 pounds is reassuring

I have seen some really nice UPSs that have software and connect to your system. Once it detects a power failure after a selected amount of time it will properly shut your system down. I think APC had one called 'Powerchute'. HeavyHemi will have plenty of time with a 2200va.

HeavyHemi
. I live way out in the boonies so power glitches are pretty frequent. I'm running a CyberPower 2200va...The quiet hum and 70 pounds is reassuring

That's a beauty I live in a smallish town and experience maybe 5 power outages per year but never seen a brown out.
 

robbysites
I have seen some really nice UPSs that have software and connect to your system. Once it detects a power failure after a selected amount of time it will properly shut your system down. I think APC had one called 'Powerchute'. HeavyHemi will have plenty of time with a 2200va.

 
CyberPower has "Powerpanel" that does feature current sensing and auto-shutdown that can be set for when battery reaches a certain percentage.

hakkinen
So, would this one be ok with my 850 G3? :) 
 
https://www.amazon.com/gp...amp;smid=ATVPDKIKX0DER

I like it. It has protection for everything that runs through my computer room. It even has a NEMA rating. I did not look at the warranty but it does have a pure sine - Good name brand. I have several here at work.

 
ps. 3-Year Limited Warranty & $250K Ultimate Lifetime Insurance for connected equipment
Fill out the info when you get it and the only thing you will have to do is replace the battery in a few years.