Which UPS for my system

wiedeia

Prominent
Feb 8, 2018
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510
I am confusing with what I found in the internet. My system:

Operating System
Windows 10 Home 64-bit
Computer type: Desktop
CPU
Intel Core i5 6600 @ 3.30GHz 31 °C
Skylake 14nm Technology
RAM
8.00GB Dual-Channel Unknown @ 1066MHz (15-15-15-36)
Motherboard
Gigabyte Technology Co. Ltd. H170M-D3H-CF (U3E1) 40 °C
Graphics
DELL S2240L (1920x1080@60Hz)
Intel HD Graphics 530 (Gigabyte)
Storage
298GB Western Digital WDC WD3200AAJS-00L7A0 (SATA) 50 °C
931GB Hitachi HUA722010CLA331 (SATA) 46 °C
149GB Seagate ST3160215AS (SATA) 49 °C
Optical Drives
HL-DT-ST DVDRAM GH22LS50
Audio
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.

Devices Watt
Processor Intel i5- 65
Motherboard GigaByte H170M-D3H-CF 100
WDC WD3200AAJS-00L7A0 7.8
Hitachi HUA722010CLA331 8
Seagate ST3160215AS 13
Monitor DELL S2240L 15.5
Total 209.3

I am also using a Cougar CMX 700W power supply.
My old UPS was a APC Back-UPS 625 with 325 Watt Output. It is now more than 3 years 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
 

kanewolf

Titan
Moderator
The bigger the better. UPS units can only support about 1/2 of their "rating" as you found with the 625 maxing out at 325. You can't have "too big" a UPS. It will only support your system for a longer time. There is no technical drawback, only cost. If you want any significant run time (10+ min) then an 800 to 1000W is appropriate. I run 1500W commercial units that I buy used on E-Bay. Then I put new batteries in them.
 

How long are your outages? Your current UPS should allow you to do a clean shutdown before running out of power.
The longer the "stay alive" time, the bigger (and more costly!) the UPS needed
 

wiedeia

Prominent
Feb 8, 2018
4
0
510
Hi clarkjd,
the shortages are not very long. Mostly up to 5 minutes. The stay alive time will be good enough if it is up to 5 minutes to close all open tasks and shut down the system. My UPS I have had before was an APC Back-UPS 625 with 625 AV / 325 Watts. It works ok in the past but I did not have the new intel processor, mainboard and powersupply. I would appreciate to use the same model again but I am not certain if it is ok with the new system.
Your answer sounds like that. Would be great!
Can you confirm this?


 

wiedeia

Prominent
Feb 8, 2018
4
0
510
No, the UPS does not beep wen it is connected to mains. But in the morning when I switched it on it started beeping continiously. At this time only the Monitor with around 15 Watt is connected. When I turn the UPS off, disconnect all the cords and switch the UPS on again it passes a selftest and turned to green without beeping. After that I can connect all my devices (Monitor and PC) and let them run with no problem. But this seems normal to me because at that time the devices are provided from the wall and not from the UPS. In case of outrage the UPS turns off immediately. So I guess the battery is already gone after more than 3 years.

 

Aeacus

Titan
Ambassador
MERGED QUESTION
Question from wiedeia : "Which UPS fo my system?"



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.