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So Apparently I should have a UPS power thing - Page 2

post #11 of 58
Quote:
You shouldn't need a UPS, just a surge protector. A UPS is only useful for power outages.
...of which there are a LOT during the hurricane and rainy season (now upon us).


Just a few days ago....power on/off/on/off/on/off.....really frustrating.
post #12 of 58
Quote:
Originally Posted by JVene View Post
...of which there are a LOT during the hurricane and rainy season (now upon us).


Just a few days ago....power on/off/on/off/on/off.....really frustrating.
My side of Florida must be a different kind of monster. Lots of lightning, but I don't get power outages.
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post #13 of 58
Thread Starter 
Quote:
Originally Posted by JVene View Post
Shipping is incredible on these devices.....

In Miami you have several CompUSA's to choose from.

Here's a page of their UPS devices in the general power range required for your system (you have an 850w power supply, probably draw around 450 to 600 depending on configuration).

http://www.compusa.com/applications/...|c:234|&Sort=4


Favor APC (they're the standard by which all others are judged), but I've had good luck with Ultra, Cyberpower and Tripplite. Avoid diablotek.

Cheaper units have "back-ups" power...they switch in when there's a brownout or blackout.

Run for maybe 3 to 10 minutes....enough to shut down cleanly - or survive the 1 second brownouts.

The "smart" units.....with AVR....always operate to stabilize power, offer more protection.

Ask before you buy if the UPS is compatible with your power supply - be specific. Some PFC supplies don't work with certain UPS devices.

The people at the CompUSA on Kendal drive near sw 125 Ave are nice, the one on Dixie got better, the one by Dadeland is ok (busy).
Thanks, very informative. I usually go to the the by dadeland and the one on dixie. I live right between the two and I bought my monitor from the one on 125th ave and 88th street. I'll check out what they have and ask around.

And Cyber Power seems to be cheap and they look pretty nice. I might look into them
Quote:
Originally Posted by lilraver018 View Post
Do you have a frys in your area. They always have apc and cyberpower UPS on sale for cheap.

I got mine on ebay for 60 bux msrp for 180.

It is a cyberpower unit rated at 660 w.
But APC is a fantastic brand. You dont need a ups. You should get a voltage regulator if you are short on cash.

http://www.amazon.com/APC-P4GC-Power.../ref=de_a_smtd
nope, no fry's. Can you link me to a voltage regulator?
Quote:
Originally Posted by IrDewey View Post
You shouldn't need a UPS, just a surge protector. A UPS is only useful for power outages.
Is IrDewey right?
edit: answered by Jvene

JVene, I assume you are in Miami so here's the OCN club if you feel like joining
http://www.overclock.net/groups/sout...ocn-group.html
Edited by KG363 - 6/7/10 at 5:55pm
post #14 of 58
OK probably a few basics:

1. A UPS (Uninterruptible Power Supply) is basically a sealed lead acid battery with an inverter connected to it, it should provide enough power to run the machine for a few minutes
2. Some UPS systems also provide power filters or surge suppressors to clean the power or stop spikes
3. When buying a UPS consider the system it's connected to, and how much power it will need to provide, if it's undersized, it will simply shutdown when the power shuts down, thus providing no use whatsoever

APC is the major brand that comes to mind when I think of UPS systems...
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post #15 of 58
Thread Starter 
Quote:
Originally Posted by TheDreadedGMan View Post
OK probably a few basics:

1. A UPS (Uninterruptible Power Supply) is basically a sealed lead acid battery with an inverter connected to it, it should provide enough power to run the machine for a few minutes
2. Some UPS systems also provide power filters or surge suppressors to clean the power or stop spikes
3. When buying a UPS consider the system it's connected to, and how much power it will need to provide, if it's undersized, it will simply shutdown when the power shuts down, thus providing no use whatsoever

APC is the major brand that comes to mind when I think of UPS systems...
So I should get one that's around 600w?
post #16 of 58
Hah how ironic... I just got this UPS from bestbuy at Dadeland. (Was on sale for $140)

And yeah, the storms have gotten worse... the UPS gives me piece of mind like you wouldn't believe. Though the UPS is a bit more than what I need, I can pull a good 7-8 minutes on this sucker when the power goes out, giving me plenty of time to shutdown.

Side note, get an APC or Cyberpower, nothing else.... those are the two leaders and for good reasons. APC is obviously preferred, their support is 10x better than Cyberpower's.. and yes, I have dealt with both. APC also replaced a Dell we had at work. Nearly instantly. This was a year or so ago, but still, that's awesome support.

Also, look here, best buy is having up to 20% cashback... that's a great incentive
    
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post #17 of 58
Quote:
Originally Posted by KG363 View Post
So I should get one that's around 600w?
Well sadly a lot of them are measured in KVA... so the calculation is a little bit out, also consider the wattage of your monitor, unless you don't care about lost files when you shut down windows (can't see screen, can't choose to save open files)

according to an APC whitepaper, most modern Computer stuff is PFC (power factor corrected, so the VA rating is about the same as watts)
Quote:
The Watt rating for a computer may not be equal to the VA rating
All Information Technology equipment including computers uses an electronic switching power supply.
There are two basic types of computer switching power supplies, which are called 1) Power Factor
Corrected supplies or 2) Capacitor Input supplies. It is not possible to tell which kind of power supply is
used by inspection of the equipment, and this information is not commonly provided in equipment
specifications. Power Factor Corrected or PFC supplies were introduced in the mid 1990’s and have the
characteristic that the Watt and VA ratings are equal (power factor of 0.99 to 1.0). Capacitor Input supplies
have the characteristic that the Watt rating is in the range of .55 to .75 times the VA rating (power factor of
0.55 to 0.75).
All large computing equipment such as routers, switches, drive arrays, and servers made after about 1996
uses the Power Factor Corrected supply and consequently for this type of equipment the power factor is 1.
Personal computers, small hubs, and personal computer accessories typically have Capacitor Input supplies
and consequently for this type of equipment the power factor is less than one, and is ordinarily in the range
of 0.65. Larger computer equipment made prior to 1996 also typically used this type of power supply and
exhibited a power factor less than one.
However given all that, your PSU is not 100% effcient, and for sure doesn't use all 600 Watts

Your LCD supply will be say 30 to 50 watts...

Based on your Sig hardware you're probably using in the neighbourhood of 350 to 400 watts AT FULL LOAD, plus your LCD... so 450VA would probably be fine... so even if you're in a Furmark session, then you shouldn't shut down
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post #18 of 58
I have an APC Smart UPS SU1000NET. It's a pretty good UPS. Also be weary of cheaper UPS units that use "stepped sine waves" that may be incompatible with Active PFC power supplies. I dont know much about the physics of that but I've heard it can pose problems when the UPS is on battery power.

Higher end UPS units output true sine waves which work with PFC, my SU1000Net being one of them. I also like it because it also cleans the power.
 
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post #19 of 58
Thread Starter 
Quote:
Originally Posted by Munkypoo7 View Post
Hah how ironic... I just got this UPS from bestbuy at Dadeland. (Was on sale for $140)

And yeah, the storms have gotten worse... the UPS gives me piece of mind like you wouldn't believe. Though the UPS is a bit more than what I need, I can pull a good 7-8 minutes on this sucker when the power goes out, giving me plenty of time to shutdown.

Side note, get an APC or Cyberpower, nothing else.... those are the two leaders and for good reasons. APC is obviously preferred, their support is 10x better than Cyberpower's.. and yes, I have dealt with both. APC also replaced a Dell we had at work. Nearly instantly. This was a year or so ago, but still, that's awesome support.

Also, look here, best buy is having up to 20% cashback... that's a great incentive
Thanks for all the info. I plan on seeing what they have in stock sometime this week

Quote:
Originally Posted by TheDreadedGMan View Post
Well sadly a lot of them are measured in KVA... so the calculation is a little bit out, also consider the wattage of your monitor, unless you don't care about lost files when you shut down windows (can't see screen, can't choose to save open files)

according to an APC whitepaper, most modern Computer stuff is PFC (power factor corrected, so the VA rating is about the same as watts)


However given all that, your PSU is not 100% effcient, and for sure doesn't use all 600 Watts

Your LCD supply will be say 30 to 50 watts...

Based on your Sig hardware you're probably using in the neighbourhood of 350 to 400 watts AT FULL LOAD, plus your LCD... so 450VA would probably be fine... so even if you're in a Furmark session, then you shouldn't shut down
Wow so I don't need such a large unit. I think I'm gonna go with a 500w one to be safe

Quote:
Originally Posted by ez12a View Post
I have an APC Smart UPS SU1000NET. It's a pretty good UPS. Also be weary of cheaper UPS units that use "stepped sine waves" that may be incompatible with Active PFC power supplies. I dont know much about the physics of that but I've heard it can pose problems when the UPS is on battery power.

Higher end UPS units output true sine waves which work with PFC, my SU1000Net being one of them. I also like it because it also cleans the power.
I can't afford a high-end one so I'll take my chances
post #20 of 58
Thread Starter 
This is what I understand so far:
- get APC or Cyberpower
- Shipping is ridiculous so buy at CompUSA
- Get one ~500w or 800va-1000va
- good to have with all the storms and such (like right now lol)
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