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is this UPS good enough ?

post #1 of 35
Thread Starter 
hello guys...


I have got the Elite 800 Pro Mercury UPS which is intended to be used with my sig rig, so I would like to hear your input about it please.


here is the specification of that Mercury Elite 800 Pro UPS

the point that I most think about is that the total power of the UPS is 480 watt, while my PC power supply is 800 watt, ( does this mean there is a problem ?)

also there is something I would like to ask you about, I have had this UPS for about a month by now, and it works really great, but this morning, I was playing Alan Wake, where I just found myself immersed in the game forgetting that it was the time for the power-cut rolleyes.gif (8:00 AM)..

so the power-cut happened at time, and to my surprise, the UPS didn't serve me, when the power was cut, the computer shut down ( the case and the LED) and then restarted, this seemed to be a bit weird to me, because if it was that the UPS didn't work (at all) then it was supposed that the PC shuts down only, without being restarted, right ??

so I really want to to figure out why did this happen ?


1- why the PC shut down in the time it was supposed no to, due to being connected to a UPS ??

2- how come the PC restarts without I touch it ??

can you guys ( a special call for the power-related issues gurus) help me understand this please ??

best regards.
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my humble epic
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post #2 of 35
It is very possible that your power supply has a design that incorporates Active PFC (Power Factor Correction) which needs a "clean" power signal to be able to operate. When the UPS switches on, it gives off a "dirty" signal, meaning that the PSU can't function correctly, and can therefore not stay on. I had this problem with a Back-UPS UPS, and solved it by instead buying a UPS that had pure sine wave output (what you need if you have an Active PFC power supply in your computer). The UPS I chose was the CyberPower CP1350PFCLCD
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post #3 of 35
You bought a cheap UPS that uses stepped/simulated sine wave. In simple English term, it is not the same as the power from your outlet (the power your PC is designed to use). Like kubed_zero have said, it is a "dirty" power. Modern PSUs do not like this "dirty" power. Some PSUs will shut down the moment UPS is switched to the battery mode. Your PC restarted on its own probably because BIOS settings have it restarts upon power failure.

You need to spend some money on getting a quality UPS, a pure sine wave based UPS.
I noticed the UPS you currently are using has input of 220 V. Mind telling me where you live and budget for a new UPS?
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post #4 of 35
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

You bought a cheap UPS that uses stepped/simulated sine wave. In simple English term, it is not the same as the power from your outlet (the power your PC is designed to use). Like kubed_zero have said, it is a "dirty" power. Modern PSUs do not like this "dirty" power. Some PSUs will shut down the moment UPS is switched to the battery mode. Your PC restarted on its own probably because BIOS settings have it restarts upon power failure.

You need to spend some money on getting a quality UPS, a pure sine wave based UPS.
I noticed the UPS you currently are using has input of 220 V. Mind telling me where you live and budget for a new UPS?

unfortunately there are not that options for me here in Syria where I live, especially as you know nowadays with the sanctions applied on exporting and importing, so now I think you can imagine the situation...


I may get a newer one later, but for sure not for now, especially that as I said in the first post that I have JUST bought that UPS lately, so I may need some time to afford a new one...

but let me tell you something, I just thought about it.... when I had the power cut on 8:00 AM this morning, I re-read the manual trying to find out something about this, but I couldn't find a thing actually, the power-cut lasted for an hour, so the current was on again on 9:00 AM, I directly went and switched the UPS and PC on, and once Windows loaded, I launched the game again )Alan Wake) and then deliberately plugged off the UPS cord, letting the PC fed up by the UPS, (with the game was still running), this resulted in an instant self-restart by the PC ( or maybe it first turned off and then restarted?? )

again I got upset, then I turned off the PC once Windows loaded frown.gif.... after this, I went to my work, and came back to the PC in the evening, I turned on PC on 8:40 PM, and once Windows loaded I deliberately plugged off the UPS cord which was connected to the main AC source, but this time the PC didn't restart or shut down, it resumed loading the programs and services normally, sure I then re-plugged in the UPS cord, and not I am discussing this with you here...


so:

1- do you think that in the morning the UPS was not charged enough which resulted in an instant shutdown then restart ??

2- or this was due to the game which was running that might put the PC on its full load which therefor made an overload on the UPS ?

3- in general, do you think this UPS will make side-effects on my PC??

4- what can these occasional power-cuts affect with my PC ??


thanks.
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my humble epic
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post #5 of 35
Thread Starter 
after posting the above reply, I launched the Alan Wake game and then deliberately plugged off the UPS cord, this resulted for an instant restart of the PC, now it seems like this happens only when I have a power-cut with a game running, seems like UPS works on its full potential when running a game !!
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my humble epic
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post #6 of 35
Yeah, the CPU draws so little power when idle, I believe the power supply can deal with the "dirty" power a little better, since I would assume it's only drawing maybe 100 watts.
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post #7 of 35
I would not use a UPS if you cannot get one with pure sine.

1) It voids warranty (for many companies).
2) It's bad on your PSU, and hardware.
3) It's going to cause headaches in some cases.
4) 480W UPS is not enough for much, if any, battery life at gaming load. I use a 900W with sig rig and still only get 2-3 minutes. If I shut the game down, it goes up to about 15 minutes.
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post #8 of 35
Quote:
1- do you think that in the morning the UPS was not charged enough which resulted in an instant shutdown then restart ??

No. During normal operation, UPS will constantly charge itself. So its battery capacity is always at 100%.

2- or this was due to the game which was running that might put the PC on its full load which therefor made an overload on the UPS ?

Yes and no. During gaming your PC draws more power, which in return makes your PSU less tolerant to "dirty power". Which is why your PC shut down during gaming, but not on idle.

3- in general, do you think this UPS will make side-effects on my PC??

On long term, it may reduces the lifespan of your PSU. Short term wise no. May void the warranty on your PSU though.

4- what can these occasional power-cuts affect with my PC ??

Without a quality UPS, it can cause damages to your hard drive.


OP, what I would do is go into BIOS and look for a setting that asks what to do in the event of power failure. Change that to Power Off. That way it does not restart right away when your PC shuts down. At the very least it puts less stresses to your PC. It sounded like that power out was a scheduled one right? Just don't use your PC any time there is a scheduled power outage.
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post #9 of 35
Thread Starter 
well, what do you guys say about this one ?

there is a PDF file enclosed, so you can find enough info I hope, If it's good, I may get the 1500 VA/ 900 watt,

when I tried to search about it on google, I cam to this link, which shows that the model picture is not the same as the one I linked above, though the brand name and specifications are the same, and here I wonder, regardless of the model shape, I would like to ask: if I pick up the 1500 VA/ 900 watt, and appoint it only feed up the PC case, and make the LED fed up by the current one I have (the mercury one/480 watt) do you think then I may face the same problem when having a sudden power-cut ??

I mean, do you think that if I will be playing a game and have a sudden power-cut, do you think the PC will restart directly without giving me the enough time to quit the game and then turn off the PC ??

I am so much concerned about this, also I linked this new one here because it's one of the available crap I have here in my country, and I can rather afford it.( 6700 Syrian Pound)



so what do you guys think ??
my humble epic
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my humble epic
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post #10 of 35
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

[/B]
OP, what I would do is go into BIOS and look for a setting that asks what to do in the event of power failure. Change that to Power Off. That way it does not restart right away when your PC shuts down. At the very least it puts less stresses to your PC. It sounded like that power out was a scheduled one right? Just don't use your PC any time there is a scheduled power outage.

thanks for the input, and concerning the scheduled power-cut, then yes, there is a specified schedule (Supposed), and I do work on this schedule, but sometimes, I just get surprised by my intelligent BLOODY Syrian government about this.... can you guess what a surprise may wait for you in the wrong time ??


- regarding the BIOS setting, I will take a look, but I hope if I do what you recommend, I hope this doesn't affect my PC, because BIOS default settings means the safest settings motherboard companies make to save a system, right ??
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my humble epic
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