Which UPS to choose?

Question

Iron

Hello, help me choose a UPS for a PC with the following components: 1) Video card Gigabyte GeForce GTX 1080 Ti XTREME EDITION; 2) GIGABYTE Z370 AORUS Gaming 7 motherboard; 3) Intel Core i7-8700K processor; 4) 4TB HDD WD Black [WD4005FZBX]; 5) 250GB SSD M.2 drive Samsung 970 EVO [MZ-V7E250BW]; 6) RAM Kingston HyperX Predator RGB 4 dies of 8 GB; 7) Cooler for Cooler Master MasterAir Maker 8 processor; 8) Aerocool KCAS-700W 80+Bronze power supply; 9) Monitor AOC AGON AG352UCG. I don’t understand UPS at all, since I have never bought or used them, I just heard that I take a low-power one, it will just turn off if the light goes out, there is an extra overpayment for a very powerful one, so who understands, please help me.

Answer 1

Heh, you already decide why you oops.
There are at least three weakly intersecting scenarios and, accordingly, three product groups for them:
- intercept a power failure and work until the moment of normal shutdown (maximum 10 minutes)
- intercept a power failure, automatically turn off the computer, notify (if possible), normalize power during operation etc.
- constantly monitor and correct the shape of the voltage signal, constantly monitor the parameters and notify if necessary, immediately switch to batteries in the event of a power
failure .lower than others, because in fact (if we take the example of APC, as the most famous manufacturer) - this is a "filter with a battery". If we take a surge protector, naturally improve the filtering capabilities, adapt the system for switching to the battery when the power goes out for 8ms or more - we get what? That's right, back-ups. In normal mode, it passes the input voltage through the filter and supplies it to the output connectors (which are now often made in the form of sockets for ordinary plugs), and when it fails, it connects the battery. There is no monitoring of the state and other things, of course, shutdown when it disappears only manually.
The cost of ups of the second group is noticeably higher than the first, but lower than the third, and they are usually used most often. In addition to the input filter, an autotransformer (AVR) appears here, which increases or decreases the voltage (which back ups do not do - and having 190V in the network is not uncommon for Russia), an additional output filter and a monitoring unit. Monitoring is usually carried out by output to the front panel, as well as by signal transmission via the COM port. AVR can be with a stepped sine wave or with a pure sine wave, the former are obviously cheaper. The switching time to batteries is less - about 4 ms, but it is. Such an oops is usually monitored by a special program that turns off the computer if the battery capacity does not allow it to work for another N minutes or it has already worked for M minutes or ... there are many criteria. Understandably, any monitoring in the course of work, notifications by mail (via a computer). You can insert a small card into such an oops - and it will be able to notify even in the absence of a computer!
Well, the cost of ups of the third group is even higher than the second. Here, the input voltage is simply converted to DC, which is then converted back to AC. The battery is always connected in this mode, so the transition time to battery power is zero. In addition, the output is always a sine wave of the form specified by the ups, that is, this ups filters all possible interference, allows you to work in networks with very low or very high power, the only type that has galvanic isolation. Of course, all the possibilities of monitoring that can only be.
Therefore:
There is no overpayment here. There are opportunities that you personally do not need - well, see for yourself.

Answer 2

It depends on what you want. Have time to turn it off or sit still comfortably for about 30 minutes.
I have APC 1000, it keeps the whole thing for 20-30 minutes. I've been using it for 8 years now. About 4 years ago I changed Akum, took non-branded ones (although there are none in nature =) Just a sticker)

Answer 3

Well, at a gallop, I know this garbage, first you need to measure how much the computer monitor consumes and what else you need there. so you connect the wattmeter to AIDA in stress test mode and you get what output power you need to have on the UPS.
Then think about how much time you need from the UPS.
Well, having received these two parameters, look for what suits you.