I've built a "basic" PC desktop, I mean 150-200w max for "basic" including
my monitor, with a Corsair CX450 PSU (OEM CWT RPS0053) with active PFC. Now
I need a UPS but my budget isn't high to get the best (eg. an online UPS) so I'd like to buy a UPS with the best quality/price relationship for my goals and equipment within 180USD. AFAIK I need a UPS that generates a pure
sine wave during a blackout because of my PSU's active PFC, now let's define my goals.
My worst scenario is when it's raining hard because blackouts occurs randomly,
eg. last time it rained there were 3 blackouts within 30 minutes and then no more ones though it kept on raining for hours. My "limit" is 2 close blackouts,
I mean I've to be able to shut my pc off correctly during the 2nd blackout then... I'll just wait for better weather time :) Well my electrical system suffers brownouts oftenly too but I guess a line-interactive UPS, I mean with AVR, will be a solution for that.
That said please tell me how much minimum power (VA / W) has to generate an UPS to get my goal, I mean the worst scenario I've described above. Then please
tell me if an UPS must have other specifications. Finally please suggest me some UPS models to buy within 180USD that fit my personal case.
Hi Paul,active PFC UPS when on battery mode?
I'm not skilled about IT and I thought my PSU max power consumption was enough to establish UPS max power supplying for my PC, anyway that's my hw cfg (but PSU of course):
- CPU amd ryzen 2200g = cTDP 46-65W
- mobo msi b450-a pro = honestly I don't know!
- ram HyperX Predator DDR4 HX432C16PB3K2/8 Kit 8 GB (2 x 4 GB), 3200 MHz, DDR4 CL16 DIMM = I don't know exactly but I guess about 2x1.5W = about 3W
- hdd WD black @7400rpm (WD1003FZEX-00K3CA0) = 6.8W (read/write)
- monitor Acer x193w = 37W
- other stuff: basic mouse + basic keyboard + case (Sharkoon S25-w with 2 fans) = I guess just a couple of Ws
TOTAL = 111.8W for sure + mobo + other stuff = I guess it's all under 200W
Now the bad news: here in Europe I can't buy neither APC BR1000MS nor CyberPower CP1350PFCLCD series nor GX1325U series. I'm especially sorry for APC which I know is an UPS market leader. Here I can buy these cyberpower UPSs
https://www.cyberpower.com/eu/en/product/series/pfc_sinewave#models
in particular I pointed my attention to cp900epfclcd 900VA pure sine wave model:
https://www.cyberpower.com/eu/en/product/sku/cp900epfclcd
which is my "milestone" both for specs and price. I can buy it for 170eur so let's put my budget to 206USD just to give an international gauge :)
There's also this Powerwalker, which is a very cheap alternative UPS with pure sine wave I can get here for just 85eur:
https://powerwalker.com/?page=select&cat=VI_SW&lang=en
and the closest to the above cyperpower is https://powerwalker.com/?page=product&item=10120080&lang=en
800 VA - 480W (Output Power Factor 0.60) - Line-Interactive - Active PFC - Pure Sine Wave
I'm a bit skeptical about the "pure" sine wave declared due to its low cost, I can just point your attention to these amazon buyers' reviews:
- https://www.amazon.de/-/en/gp/customer-reviews/R2A98RNQT9TMDY/ref=cm_cr_arp_d_rvw_ttl?ie=UTF8&ASIN=B00K792UR0
- https://www.amazon.it/gp/customer-reviews/R16180D87WXDPL/ref=cm_cr_arp_d_rvw_ttl?ie=UTF8&ASIN=B00K792UR0
but we have to trust! If those graphs are genuine then I guess its components are very cheap (and weak?); that's my only explanation for a so low priced pure sine wave UPS. Anyway what do you think of this "kind" of sine wave shape? Will it fry my
I'm just afraid the powerwalker won't last very much, I don't mean its battery but its electronics. By the way, are they comparable (lasting/cost) by a long time period "investment calculus"? In other words will the cyberpower last the double (or more)than the powerwalker? Finally consider I've got a welder and I can make very "easy" fixes like changing capacitors so I'll take a "little" electronic cure by myself of my 200$ investment :)
The Powerwalker sure has lots of specs, but it's pretty difficult for me to judge whether it's better or worse than others, because the others don't give that level of spec.Did you already read the cyberpower cp900epfclcd datasheet here? https://www.cyberpower.com/eu/en/File/GetCyberpowerFileByDocId/DS-18080023-01
consider thisThe Powerwalker sure has lots of specs, but it's pretty difficult for me to judge whether it's better or worse than others, because the others don't give that level of spec.Did you already read the cyberpower cp900epfclcd datasheet here? https://www.cyberpower.com/eu/en/File/GetCyberpowerFileByDocId/DS-18080023-01
By the way, I amazon-ed a little bit to search an USA cp900epfclcd's "brother" and found the cpXXXpfclcd "family". As you can see the "e" is missed and I guess it stays for european (?). If yes, in the sense if there're no other important differences,
https://www.amazon.com/CyberPower-CP1500PFCLCD-Sinewave-Outlets-Mini-Tower/dp/B00429N18S/lower class" ones as the 850VA. I say that because AFAIK certain brands do this job: different models quality within the same models "family" (eg. a laptop series); what do you think about this cyberpower case?
You can find infos here: https://www.cyberpowersystems.com/product/ups/pfc-sinewave/cp850pfclcd/
and its datasheet here https://dl4jz3rbrsfum.cloudfront.net/documents/CyberPower_DS_CP850PFCLCD.pdf The first difference I read is about the on-battery wave output: just "sine wave" and not "pure sine wave" as the EU family (cpXXXEpfclcd) BUT if we look at amazon buyers' comments, we can get these graphs:
-CP1500PFCLCD https://www.amazon.com/gp/customer-reviews/R125IYKZD1IT4C/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B00429N19W
https://www.amazon.com/gp/customer-reviews/R3A8KDW5B5IWBO/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B00429N19W
https://www.amazon.com/gp/customer-reviews/RQQQ40BGBNRN6/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B00429N19W
https://www.amazon.com/gp/customer-reviews/R29GAXD9DMUIEE/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B00429N19W
-CP1350PFCLCD https://www.amazon.com/gp/customer-reviews/R3RGWTY0YNR57C/ref=cm_cr_othr_d_rvw_ttl?ie=UTF8&ASIN=B00429N19M
We'd trust as usual. Unfortunately there's nothing similar for the 850VA model within comments. My only concern is I guess there could be a certain possibility cyberpower built the "upper class" models (eg. 1500VA) with a better electronics than the "
I share your same doubts about the powerwalkers because for now it's hard to find many feedbacks to "study". Just this 800VA model
https://www.amazon.it/BlueWalker-PowerWalker-Line-Interactive-outlet-uninterruptible/dp/B00K791C1U
has 101 ratings and they're "quite good". My "favorite" comment is https://www.amazon.it/gp/customer-reviews/R1X724JY6J8HX4/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B00K791C1U
and tells the main problem is the transformer is not cool down enough by the heatsinks so the UPS won't last so much.
By the way, there's also the PSW powerwalker series https://powerwalker.com/?page=select&cat=VI_PSW&lang=en
and it's more exspensive than the SW series I wrote above. Honestly I don't understand the differences, can you help me? Let's consider the 750VA model
https://powerwalker.com/?page=product&item=10120081&lang=en
with its datasheet https://powerwalker.com/datasheets/PowerWalker%20VI%20PSW%20Promo.pdf
I don't think the difference SW / PSW is just "sine wave" / "pure sine wave" because the SW generates pure sine waves too, so what's different to the SW series brothers?
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