Will a 1100kVA ups be enough for 750W psu ?

[tejas007]

My gaming setup has a Corsair CS 750 W PSU. The PSU is rated 80+ gold efficient. Will an APC 1100 KVA UPS be enough to power it for 2-3 minutes.
Will it have a detrimental effect on the overall performance of my computer under normal conditions when the power is up.
I am asking this because a 1500kVA is too expensive for me and I am finding it hard to shell any more money now since I have already spend a lot on my gaming rig. I can afford to purchase a different UPS for the monitor and speakers.

 

[nukemaster]

APC recommends 1100VA systems for upto 660 watts by the look of things.

Please note that even if you have a 750 watt power supply, unless you are using a VERY powerful system, chances are you are not using much over 350-400 under heavy loads(more for multiple video card systems or extremely high clock speeds).

My basic energy monitor shows about 220-250 watts with bioshock infinite(vsync ON) on my 2600k @ 4.4 + gtx 670(now this is not a hungry card either). This system has no hard drives just 2 ssd's(this can save 10-20 watts depending on the drives)

 

[ssddx]

agreed.

what i would do is use a calculator such as http://extreme.outervision.com/psucalculatorlite.jsp and put system usage to 100% and use that as a judgement of your power usage. then, if connecting a monitor add another 100-150w to be safe.

for reference my i7-920, gtx470 system idles about 350w but can go up to about 480w+ during some light gaming. i use a 1300w xs1300 apc battery backup and at idle it can power me for about 9 minutes. under gaming load about 5 minutes. if i hooked up my television (ccfl backlit 40" tv) it would be down around 4-5minutes idle and 2-3 minutes under load.

 

[nukemaster]

Damn and I thought my i7 920 was bad idling at 150 with its 5870. Maybe my energy meter is inaccurate. My UPS(XS 1200[for some reason the model seems to actually be br1200]. I also have a SmartUPS 1400, but i seems very inaccurate for power consumption. Maybe because it is so old) showed similar results.

Things have become so efficient.

 

[nukemaster]

My gaming rig has the following specs:
i7 4770 (Not the overclock version)
Sapphire 280x toxic edition
G skill ripjaws 2x4gb
WD caviar blue hdd
ASrock h87 pro 4
140mm fans x3
120mm fan x1
CM hyper 212 evo x

I am replying here because no other users get help from private message conversations.

With your system, Extreme PSU calc like that listed above lists 450-550 depending on the extra parts added to simulate your video cards factory overclock and 90 - 100% load.

In normal use it should be lower than this. A energy meter from the store can give you a very good idea of your systems power consumption as well. They tend to go for about 15-20 dollars most places.

Now you are not going to be riding out long power outs, but should have shut down time unless your monitor is a pig on power(mine shows 70watts[24inch CFL backlit model from 2008] on my UPS and power meter).

It may be worth checking with Corsair and APC about compatibility because some power supplies do not get along with UPS units with modified sine wave output(link).

So it is worth checking the wave pattern on the ups you want as well as the power supplies ability to take that wave.

 

[ssddx]

about apc and corsair compatibility..

i am using a corsair hx1000 psu with an apc xs1300.

i've had this setup for about 4 years with zero issues. it works fine during brownouts and power outages thus far.

with your system specs mentioned you should be able to get 2-3 minutes of use out of an 1100va battery backup. personally i would suggest a 1300 for more of a margin of safety but that is your choice.

 

[nukemaster]

It varies from maker to maker. Corsair uses various OEMs(they do not actually make power supplies). I have mostly read of this issue with Seasonic units just shutting off with the simulated wave.

I think the HX1000 like the 850 is a CWT part. I have had those on simulated as well. I places some FSP units and aside of a buzzing on battery they worked as well.

I just do not want the end user to have the system shut off in a power out. Better safe than sorry. You may also want to check out some of the cyberpower units. They offer some made for these newer power supplies and are well priced.

 

[Minstedmaz]

My gaming rig has the following specs:
i7 4770 (Not the overclock version)
Sapphire 280x toxic edition
G skill ripjaws 2x4gb
WD caviar blue hdd
ASrock h87 pro 4
140mm fans x3
120mm fan x1
CM hyper 212 evo x

I am replying here because no other users get help from private message conversations.

With your system, Extreme PSU calc like that listed above lists 450-550 depending on the extra parts added to simulate your video cards factory overclock and 90 - 100% load.

In normal use it should be lower than this. A energy meter from the store can give you a very good idea of your systems power consumption as well. They tend to go for about 15-20 dollars most places.

Now you are not going to be riding out long power outs, but should have shut down time unless your monitor is a pig on power(mine shows 70watts[24inch CFL backlit model from 2008] on my UPS and power meter).

It may be worth checking with Corsair and APC about compatibility because some power supplies do not get along with UPS units with modified sine wave output(link).

So it is worth checking the wave pattern on the ups you want as well as the power supplies ability to take that wave.

Hello, you should pay attention to nukemaster's advice, he helped me with the same issue last week, if it helps I thought I needed too a really big ups for my pc and extremre psu calculator showed that my pc had an approximate 430 watts usage in load, but now that I have a ups that I bought it only shows around 240 watts with all my equipment on and a high load pc game (in its own LCD display).

In my case I bought this UPS unit:

https://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BN1080G

But now I think I bought a ups which has more power than needed, the good thing in my case was that Best buy had the price wrong and I got it 30 dollars cheaper.

Oh and by the way try to see if you psu is compatible with the UPS you want to buy, in my case my Antec HCG620m psu worked perfect with the UPS I chose, but from all the info nukemaster provided me I learned that some psu's wont work well with stepped/simulated sinewave ups's