Which UPS fo my system?

I am confusing wiht what I found in the internet. My system:

Operating System
Windows 10 Home 64-bit
Computer type: Desktop

Intel Core i5 6600 @ 3.30GHz 31 °C
Skylake 14nm Technology

8.00GB Dual-Channel Unknown @ 1066MHz (15-15-15-36)

Gigabyte Technology Co. Ltd. H170M-D3H-CF (U3E1) 40 °C

DELL S2240L (1920x1080@60Hz)
Intel HD Graphics 530 (Gigabyte)

298GB Western Digital WDC WD3200AAJS-00L7A0 (SATA) 50 °C
931GB Hitachi HUA722010CLA331 (SATA) 46 °C
149GB Seagate ST3160215AS (SATA) 49 °C

Optical Drives

Bluetooth AV Audio

(Information taken from Speccy v1.29.714 (64-bit)

I tried to figure out how Much watts this system is using but I am not realy sure of that.

Processor Intel i5-6600
65 w
Motherboard GigaByte H170M-D3H-CF
100 w
7.8 w
Hitachi HUA722010CLA331
8 w
Seagate ST3160215AS
13 w
Monitor DELL S2240L
15.5 w
209.3 w

I am also using a Cougar CMX 700W power supply.
My old UPS was an APC Back-UPS 625 with 325 Watt Output. It is now more than 3 years old and does not keep the system running in case of a power cut.
I am living in Asia and we have quite often a power cut. Does anyone have an idea helping me to select the right size of a UPS for my system? Any suggestion would be appreciated.
Thank you very much
1 answer Last reply
More about ups system
  1. As far as UPS goes, you need to consider the power draw of your PC and monitor. Since your monitor uses about 18W, let's consider 25W for monitor to be safe. Your PC should consume around 200W. But just to be safe and give UPS some headroom, let's consider PC's power draw the same as PSU output wattage, which is 700W. Add your monitor to it with safe margin and you'd be looking towards 725W UPS.

    Good UPS brands to go for are CyberPower, TrippLite and APC.
    Note: The more powerful UPS you have, the longer UPS can keep your PC running before it's battery is empty.

    When looking for a UPS, there are 2 things to look out:
    1. Output waveform (square wave, simulated sine wave and true/pure sine wave)
    2. Design (stand-by, line-interactive and online)

    From here you can read about the differences between output waveform,
    link: http://www.minutemanups.com/support/pwr_un10.php

    And here are explanations about the UPS design,
    stand-by: http://www.pcguide.com/ref/power/ext/ups/typesStandby-c.html
    line-interactive: http://www.pcguide.com/ref/power/ext/ups/typesLineInt-c.html
    online: http://www.pcguide.com/ref/power/ext/ups/typesOnLine-c.html

    For example, the CyberPower CP1300EPFCLCD (1300VA / 780W) line-interactive, true/pure sine wave UPS would be more than enough for your setup, even if you decide to put a dedicated GPU into the system,
    specs: https://www.cyberpower.com/hk/en/product/sku/CP1300EPFCLCD
    (My Skylake and Haswell builds both have that specific UPS in use, one UPS per PC. Full specs with pics in my sig).

    CyberPower CP1300EPFCLCD can keep your PC and monitor running about 19 mins before the battery is empty. Of course, there are also smaller capacity UPSes available for less money.

    Actually, your PC would also do fine with 800VA / 450W UPS. E.g CyperPower CP800AVR (line-interactive, simulated sine wave) with 12 mins of runtime at 200W,
    specs: https://www.cyberpowersystems.com/product/ups/cp800avr/

    Note: Depending on an UPS brand and usage frequency, the battery inside the UPS lasts for 3 - 5 years. My best guess about why your current UPS can't sustain your PC is due to the worn out battery.
    Oh, both CyberPower UPSes come with user changeable battery, so when battery dies, you don't need to buy whole new UPS. Instead, you can change out only the dead battery.
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