Surge Protector BEEEEEP...

[VirtualLarry]

He is playing number games with what was obviously irrelevant. Since a 600 watt system would toast bread. VA is a function of the load - not a UPS. He should have known that. A second reason to ignore his posts. Does not matter if a battery backup is 600 VA or 600 watts. It still provides sufficient power to his computer. As did a 500 watt or VA battery backup. Just a third reason why his posts about a 600+ watts were obviously bogus. And best ignored.

You really and truly are an idiot. What IS "obviously irrelevant" is posts about Saddam and WMD.

I posted a very relevant SOLUTION to the problem.

The OP has what I believe to be a 600VA UPS. NOT a 600W UPS? Why? Because of the way that UPSes are marketed. You see "650VA" on the box, and then if you're really lucky, you find the wattage rating of 350W hidden in small print.

*To size a UPS, for a PC, you need to look at the wattage rating, and then look at the wattage drawn by the PC at the wall (with a Kill-A-Watt), and leave perhaps a 10% margin. *

Clearly, the OPs system with a high-end gaming card is drawing at the limit of the UPS's wattage, which I estimate at 350W or so.

As for "Does not matter if the battery backup is 600VA or 600W" - that only proves your ignorance about real-world UPS sizing and marketing. It absolutely DOES matter if the UPS is rated 600VA, or it is rated 600W. Because if it's rated 600VA, that means that it is really only rated for 300-350W. Which is what the actual important rating is. (And most likely why it is beeping.)

Why post the same irrelevant arguments rather than address the OP's problem? But then that requires information he has not provided. As you admit, those recommendations exist without relevant facts. We know a 600 battery backup should be sufficient - for three reasons. In every post, I keep returning to another relevant fact. We need more information from the OP - and quiet from the naysayers who only create fears and confusion.

"A 600 battery backup". Now you're not even addressing whether the battery backup is 600VA, or 600W. There is a very real and appreciable difference between the two, and that is the entire nexus of this discussion.

 

[VirtualLarry]

What Westom seems to be unaware of, is how UPS units are marketed in the USA.

Let's look at one, shall we?

http://www.staples.com/APC-Back-UPS-...product_171432

First, look at the product title, in big letters.
"APC Back-UPS® NS 600VA 8-Outlet Power-Saving UPS"

Notice how they only list the VA rating.

Now look at the marketing blurb with specs next to the product, in smaller print.
"360W/600VA output capacity"

Ahh, now we see how this "600" (VA) UPS is really only a "360" (watt) UPS.

With a typical mid-range gaming rig, it will likely exceed the wattage rating of this typical UPS, and thus will start beeping when it gets into overload territory.

 

[CA19100]

Also keep in mind that the tower may not be the only thing plugged into the UPS. I have my 24" LCD external 3.5" hard drive plugged into mine. The LCD adds 35 watts when it's on, and the hard drive another 10-15.

 

[postmortemIA]

Also keep in mind that the tower may not be the only thing plugged into the UPS. I have my 24" LCD external 3.5" hard drive plugged into mine. The LCD adds 35 watts when it's on, and the hard drive another 10-15.

Yep, monitor itself should draw more than 100W.
If he has a speaker setup, these can take 100W more..

 

[Torn Mind]

The "toast bread" comments are really silly, but no one has given a technical reason shy it is silly. But it is simple. Surface area plays a role in how quickly something can dissipate energy, along with the thermal conductivity of the material dissipating energy.

A 100 watt lightbulb is capable of powering a very spacialized oven: the Easy Bake. It can certainly toast your skin. There are no heatsinks and a glass enclousure over the heat-generating mechanism, i.e the filament.