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UPS and PSU

X

XpediencY

Gawd
Joined
Jan 12, 2008
Messages
683
Would a UPS/Battery backup that's rated 650W take away the difference from a PSU that's rated 850W? Or does this only matter when a power outage occurs.
 
the PSU rating has nothing to do with what UPS you should choose, how much actual power your connected components are pulling and how long you need it to last do.

Remember your PC hopefully is not pulling 100% of the PSU's rated power.
 
Well, say I'm near that threshold of about 800W. Am I getting a full 800W through the UPS?
 
If you reach the limit your UPS (should) start alarming you about an overload, and if you push it too hard it will (should) shut down.But yes, you can't draw more than 650W from a 650W UPS even if it's on line power.
 
keenan said:
If you reach the limit your UPS (should) start alarming you about an overload, and if you push it too hard it will (should) shut down.But yes, you can't draw more than 650W from a 650W UPS even if it's on line power.
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OK, that was the answer I was trying to look for. My UPS did beep once in a while, but sometimes my PSU would just shut off without a beep from the UPS. I just plugged my computer straight into the wall, overclocked it higher to check, ran 3Dmark to see if it would crash, and I'm good. :)
 
You should upgrade your PSU and your UPS. When you pull over the rated wattage for for a UPS it will trip the breaker. If you keep doing it it will eventually fuse the connectors and become a brick. Also voids the warranty.
 
What you don't want to do is have a UPS that is incapable of outputting the amount of power your PC is drawing. I've been there and it sucks.
 
Dan_D said:
What you don't want to do is have a UPS that is incapable of outputting the amount of power your PC is drawing. I've been there and it sucks.
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Absolutely. It's bad for the PC and bad for the UPS.
 
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