UPS emitting high pitched noise

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stevecamp09

Limp Gawd
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Mar 27, 2009
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I am using the APC - 750A for battery backup and surge protection. I recently added a second HD5870 GPU into my system (in sig) and ever since when I fire up a game and the 2nd gpu kicks in, I get an intermittent and continuous high pitched beeping. I am assuming that this means my UPS is getting overloaded. Can anyone recommend one that is rated for higher wattage than my current one?

Thanks
 
I am assuming that this means my UPS is getting overloaded.
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Yes.


Get an APC SmartUPS 1400 or 1500. On ebay a refirb one of these with new batteries can be had for less than $200 US shipped. If you do not want
to go that way look at other 1500 VA models.
 
Taking your monitor off of your UPS may be enough. Otherwise, the 1400/1500VA models are good.
 
Thanks for the replies! I will trying take the NEC off of the UPS first to see if that helps. If not, i'll look into those models suggested. Thanks again.
 
The LCD is maybe 60-80W, depending on brightness. I really doubt taking it off will be enough, if you consider what even one top-end (much less two) GPUs are drawing at load. But yeah, you're pairing a 1000watt PSU with a 400-something UPS at the moment.
 
Mav451 said:
The LCD is maybe 60-80W, depending on brightness. I really doubt taking it off will be enough, if you consider what even one top-end (much less two) GPUs are drawing at load. But yeah, you're pairing a 1000watt PSU with a 400-something UPS at the moment.
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How much does it cost him to try it? Always try the free potential fixes first. I'd rather be the guy that convinced him to waste 5 minutes than the guy that convinced him to spend $200 that he didn't need to.

Actually, let's change that to 5 seconds. Does just turning off your monitor during the game make it go away?
 
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dandragonrage said:
How much does it cost him to try it? Always try the free potential fixes first. I'd rather be the guy that convinced him to waste 5 minutes than the guy that convinced him to spend $200 that he didn't need to.

Actually, let's change that to 5 seconds. Does just turning off your monitor during the game make it go away?
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I didn't try that yet, will do so tonight, thanks. I never really considered the UPS to be a "weak" link when putting the machine together, just now realizing it's only rated to about 450w which is really lame.
 
Haha I don't understand the antagonism here. The OP has a 1000W PSU. The UPS has less than half the capacity, at MAX load. Pulling off the LCD monitor really isn't in his best interest when he will need a beefier UPS regardless. Otherwise, let's say he barely scoots under his UPS's MAX load by taking off the monitor. The moments he upgrades to a better set of GPUs (i.e. SLI or XFire) he will again be at risk.
 
Mav451 said:
Haha I don't understand the antagonism here. The OP has a 1000W PSU. The UPS has less than half the capacity, at MAX load. Pulling off the LCD monitor really isn't in his best interest when he will need a beefier UPS regardless. Otherwise, let's say he barely scoots under his UPS's MAX load by taking off the monitor. The moments he upgrades to a better set of GPUs (i.e. SLI or XFire) he will again be at risk.
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He may have a 1000W PSU but he is not pulling 1000W. He does not need that big a PSU. Yes, there's a good chance that taking the monitor off won't help. But why are you guys against trying a 2 second free potential fix? Seriously.
 
Does this noise sound like an official alarm or an electrical issue?

The odds of a power event while gaming are relatively low, so I don't know if you absolutely require a UPS that can hold up your fully loaded system. I'd be willing to bet that most of the time, the system is pulling 200-300w. If the noise is an overload alarm, maybe you can just disable it.

A 1000w capable UPS is going to be very expensive, especially if it's a high quality Smart-UPS, which it may have to be, because I don't know if APC has any consumer models rated at 1000w. I seem to recall a BackUPS @ 865w, but it puts out a square wave, so your PFC PSU will likely buzz (although probably harmless) when running off the battery.
 
dandragonrage said:
Search "SUA1500" on Ebay
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To those saying I don't need a 1000W PSU, not yet it's true but I got one as I planned to tri-fire later and figured might as well have the beefy PSU to start.

I moved the monitor off and the noise occurred as soon as I loaded and started BFBC2 (basically pretty much as soon as my slave 5870 fired up). So, apart from the SUA1500 model, how about this one:

http://www.newegg.com/Product/Product.aspx?Item=N82E16842101067

It's rated at around 865W...should be more than enough I would imagine for my system at full load and a little more affordable?
 
Well the others are recommending the SmartUPS b/c it's been said that you need a true sine-wave UPS to pair with an active PFC PSU. That's a topic that's been delved into fairly regularly on this forum though. But unless you're planning on gaming through a black-out, I don't think it's a big deal. I.e. once you hear it kick on, use that time frame to exit to desktop until power is restored.
 
It's rated at around 865W...should be more than enough I would imagine for my system at full load and a little more affordable?
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That is more expensive than a few SmartUPS 1400/1500 refirbs but it will work. It does have about 1/2 the battery capacity (and thus a much lower runtime) of the SmartUPS.
 
I really recommend the SUA1500. I have never used the SmartUPS SC series and I assume it's okay though I think it's their entry level SmartUPS product.
 
That is a very good choice. I was however talking about the SUA1500 models. I believe these have even larger batteries than the one pictured. There was a one on ebay yesterday for $135 + $30 shipping.

Either way these are server grade UPSs instead of being consumer grade and they have more battery reserve. The SUA1500 is around ~55lb. It has 2 18AH 12V batteries instead of 2 7.2 to 9AH batteries that most mid to higher end consumer models have.

I have a SU1400BX120. And a few 1500s at work. One word of caution was mine did not come with the data cable. Although I found a diagram online for the pinout to fix that..
 
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