Sign in with
Sign up | Sign in
Your question
Solved

Need a good UPS for a 550 W computer PSU.

Tags:
  • Power Supplies
Last response: in Components
Share
January 1, 2014 3:52:07 AM

I need a UPS for my new 550 W computer power supply. Do you know which UPS will be best for a 550W computer power supply. Nothing very expensive either. I just want a UPS that can keep my computer powered on for 10 to 15 minutes til I shut it down during a power outage in my locality. Please let me know. Thank You.

More about : good ups 550 computer psu

a b ) Power supply
January 1, 2014 7:58:53 AM

A 550W PSU doesn't mean your system will draw that much power from the UPS; please provide a list of components including external devices like the monitor that will also be connected to the UPS. What's your budget and are you looking for a pure sine wave unit (much better for the PSU)?

Edit: Bumping is not allowed in this newsgroup.
m
0
l
January 2, 2014 1:33:18 AM

There is a Dell IN1910N flat panel monitor, a Canon pixma mp480 printer cum scanner and Dell AY410 speakers connected as peripherals to the computer. My budget is $128. I want something that will be the best fit for my new Silverstone ST55F-G 550W power supply . If a pure sine wave unit is much better for the PSU then for sure I want to go for it. Thank You.
m
0
l
Related resources
January 2, 2014 10:44:04 AM

These are becoming too expensive more than $200 with shipping as I live outside the USA in India. Can you please tell me if this a good UPS and also does it have pure sine wave - APC Back-UPS RS, 1000VA, 230V. It is a 600W UPS from APC. This is available locally to me. "Thank You very much".
m
0
l
a c 1218 ) Power supply
January 2, 2014 11:54:32 AM

captaincandellight said:
These are becoming too expensive more than $200 with shipping as I live outside the USA in India. Can you please tell me if this a good UPS and also does it have pure sine wave - APC Back-UPS RS, 1000VA, 230V. It is a 600W UPS from APC. This is available locally to me. "Thank You very much".


APC Back-UPS RS, 1000VA, 230V, INDIA

On-battery Waveshape: Stepped Sine Wave
m
0
l
a b ) Power supply
January 2, 2014 12:03:46 PM

I presumed you were in North America because your budget is in dollars.

That UPS is not bad (I prefer the more expensive Smart-US), but it provides Stepped Sine Wave while on battery. Since you didn't provide a list of components, I can't verify if your PSU is compatible with that UPS.
m
0
l

Best solution

a c 1218 ) Power supply
January 2, 2014 12:39:57 PM

You only need the PC and the monitor connected to the battery backed sockets since they are the only critical components needed to confirm a proper shutdown during a power interruption event. The total power consumption of those two components should be less than 200 Watts if your system is the Dell Inspiron 545 configured as shown in your sig.

The SilverStone Strider Gold series 550W (ST55F-G) is made by Enhance Electronics. Its APFC circuit should have no problems operating on a UPS that outputs a Stepped Sine Wave when operating on battery backup power.
Share
January 3, 2014 2:15:52 AM

Thank You very much.

How are these APC uninterrupted power supplies
a) APC Power-Saving Back-UPS Pro 1000 with LCD, 230V and

b) APC POWER-SAVING BACK-UPS PRO 1000VA WITH LCD WITHOUT BATTERY, 230V.

They are 600W. Will this be sufficient for my SilverStone Strider Gold series 550W (ST55F-G) power supply and my Dell Inspiron 545 configuration. I also have the following peripherals.

1) Dell IN1910N flat panel monitor,
2) Canon pixma mp480 printer cum scanner and
3) Dell AY410 speakers.

Please do pour your knowledge on it. Thank You very much.
m
0
l
a b ) Power supply
January 3, 2014 5:29:26 AM

Absolutely. It should keep your equipment powered on for at least 10 minutes unless you are doing something that keeps the CPU and GPU running at 100% load.
m
0
l
January 4, 2014 8:22:19 AM

I mean some thing else. I read an article on UPS at hardwaresecrets.com. It says series on-line UPS is the best. They have no interruption at all.
m
0
l
a c 1218 ) Power supply
January 4, 2014 10:40:37 AM

captaincandellight said:
I mean some thing else. I read an article on UPS at hardwaresecrets.com. It says series on-line UPS is the best. They have no interruption at all.


An online (a.k.a. double-conversion) UPS is more expensive than a line-interactive UPS due to the more robust AC-to-DC battery-charger/rectifier circuit needed for that topology.

You were already complaining about budget.
m
0
l
January 4, 2014 10:59:55 AM

OK so will the APC 600W UPS be right for my SilverStone Strider Gold series 550W (ST55F-G) power supply.
Thank You.
m
0
l
a c 1218 ) Power supply
January 4, 2014 11:09:03 AM

captaincandellight said:
OK so will the APC 600W UPS be right for my SilverStone Strider Gold series 550W (ST55F-G) power supply.
Thank You.


It should work based on your system's power consumption requirements.

As always, no PSU or UPS manufacturer will guarantee compatibility. They will always recommend that you test the combination to make sure that it works for your specific configuration.
m
0
l
January 5, 2014 1:23:44 AM

I will have the monitor and the PC plugged in to a surge protector with all the other peripherals speakers and printer also plugged in to it. Then have the surge protector plugged in to the UPS. Is this configuration proper. Please do let me know. Thank You very much.
m
0
l
a b ) Power supply
January 5, 2014 7:58:49 AM

The UPS is a surge protector; therefore adding one is useless.
m
0
l
January 6, 2014 1:29:08 AM

I may need an extra surge protector if the UPS cable falls short. So if buy chance if I need an extra surge protector will that affect performance of UPS or PSU in any way. Please let me know. Thank You very much.
m
0
l
a b ) Power supply
January 6, 2014 6:06:58 AM

It won't because a surge protector does nothing unless there's a power surge; the UPS already provides that protection.
m
0
l
January 6, 2014 6:47:27 AM

GhislainG said:
It won't because a surge protector does nothing unless there's a power surge; the UPS already provides that protection.


Thank You very much.
m
0
l
January 7, 2014 1:01:25 AM

After I finish a secession with my computer, do I have to switch of the UPS as well or do I have to leave it on. Please let me know. Thank You.
m
0
l
a b ) Power supply
January 7, 2014 4:57:51 AM

Why would you power off the UPS? A UPS should always be powered on to keep the batteries fully charged. My systems, switches and routers are connected to 2 UPS that never are powered off.
m
0
l
January 7, 2014 8:17:40 AM

Because I had a 360W UPS from APC which crapped out on me after being on contentiously for 1 month. The PC would only go in sleep mode when not in use.
m
0
l
a b ) Power supply
January 7, 2014 8:24:30 AM

It probably wasn't crappy, but it most likely was underpowered for your requirements. What do you mean by "The PC would only go in sleep mode when not in use"? The UPS shouldn't affect the PC at all; it's sole purpose is to protect it and provide power if there's an outage.
m
0
l
January 8, 2014 1:34:16 AM

I mean I never powered off or shut down the computer completely. The PC was also contentiously on with the UPS for one month. After that one month the UPS started to overload and shout down if kept on for long and crash the PC as well. Please let me know. Thank You.
m
0
l
a b ) Power supply
January 8, 2014 8:41:25 AM

Like I said before, the 300W UPS wasn't powerful enough. With a new UPS that's twice as powerful you shouldn't have issues. My APC Smart-UPS are powered on 24x7; the only issues I ever had was with batteries that were too old and could no longer keep their full charge. It's up to you to keep your PC powered on all the time or not. Unlike a server that normally has to be available 24x7, a PC should be shut down or put in sleep mode (my preference) when not in use.
m
0
l
January 9, 2014 2:01:33 AM

So with the APC Power-Saving Back-UPS Pro 1000 with LCD, 230V I will not have the same problem, even though my new PSU is a 550W one right. Please let me know. Thank You.
m
0
l
a b ) Power supply
January 9, 2014 5:48:54 AM

It doesn't matter if your PSU is 550W or 1200W; what's important is how much power it draws from the UPS (or the wall outlet). At peak your whole system, including the monitor and other accessories, may draw 300W, but it should be less than 150W at idle. Presuming 85% PSU efficiency, the system may draw up to 350W from the UPS. Presuming 85% efficiency at full load, if your PSU was really drawing 550W (550/85*100 = 650W), then a 600W UPS would obviously be overloaded since all components would draw approximately 700W; if there was a power failure, the UPS would simply shutdown to protect itself.
m
0
l
January 11, 2014 12:13:04 AM

One last thing is there is another same APC UPS which is without battery. Can you please tell me what is the difference here and if this is a better UPS to go for. Please let me know. Thank You very much.
m
0
l
a b ) Power supply
January 11, 2014 7:27:12 AM

That model for India has no internal battery; you'll have to buy an external battery system. The UPS is less expensive, but you sure won't save money and you'll have 2 enclosures (one for the UPS and one for the external battery system).

If you buy the unit without batteries, then you also need to buy http://www.apc.com/products/resource/include/techspec_i... Should you decide on that expensive solution, double-check with APC to make sure this is the correct part number. I found one in India for 6,700 INR.
m
0
l
January 12, 2014 12:53:38 AM

Thank You so much. I am going with the one with internal batteries. Thank You.
m
0
l
a b ) Power supply
January 12, 2014 5:27:51 AM

With your limited budget, I sort of expected that would be your final decision. What's the cost difference between an APC Power-Saving Back-UPS Pro 1000 with and without batteries?
m
0
l
January 13, 2014 2:54:24 AM

Their site does not have the prices listed and I have not yet inquired with APC about the price. Thanks a lot for the help.
m
0
l
!