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Need a True Sinewave UPS

Z

Zer0Cool

Limp Gawd
Joined
Apr 4, 2008
Messages
375
I am looking to get a UPS for my new top of the line build. Recently I learned that if u have a ""Stepped Sinewave"", not a ""True Sinewave"" output. This can cause problems if your PC has a PSU with Active PFC! I was able to get this info from one of the reviews done on newegg. http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16842101066 I was about to get that one, but not I don’t know anymore...People say u need a "True Sinewave" UPS or u might have problems with overclocking...etc

Can someone ether using newegg.com or ncix.com help me find the right PSU? I would Like it to have about 750W

Thanks
 
I doubt it really matters... I've never had a UPS screw with my overclocking due to an active PFC power supply. Personally I wouldn't worry about it.
 
Hmm. Personally I would not spend the extra dough on true sine for a line interactive. I don't think its going to make enough of a difference. How often do you end up on battery typically? I know that before my UPS stopped charging its battery I was going on battery every few days for a few minutes due to low voltage conditions.

EDIT: After reviewing the thread on Jon's forum, it appears that it doesn't matter if you live in a country with 120v at the wall. The supposed damage that can occur is for 240v locales where the PSU is running near the upper limit of its input voltage range and the "approximation to a sine wave" involves much higher voltage which could potentially damage the capacitors.

The only potential "issue" is with switchover time on a line interactive, and thats independent of sine/stepped/square and shouldn't be a problem with a quality PSU like the one you are considering.
 
I ended up buying an refurbished APC Smart-UPS 1000 from excessups. If you don't mind a refurbished unit, it is a good deal.

I originally bought a stepped UPS, but returned it after noticing that my power supply would start making a buzzing noise when the UPS switched to battery power. The Smart-UPS works great with my power supply, with no buzzing.

Jordan
 
FWIW, I've used 2 difference APC units: 750BB and 1250 NS.

I've used an Enermax 535W APFC on both and haven't had a problem. I also just built a new rig that uses a Corsair 550VX with APFC, and it hasn't had a problem either.

I think the 1250 NS has AVR, also fwiw.
 
Get thy butt to eBay.
Get a used Liebert. There is simply nothing better, unless you can score one of the smaller Eaton units. The Lieberts can be had cheap, the batteries are easily replaced for cheap, and they aren't Chinese garbage known for catching fire.

True Sine Wave? Gimmick. You're that worried about it, get a line conditioner.
 
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