Working out UPS req's?

[Mattch23]

Hey guys,

 

Bit of a strange one for me here; I have a friend looking at getting a UPS because he's lost a drive after a power failure, but neither of us know how to really work out what type of requirements he'd need.

 

For example, he has a 1050W PSU, does this mean we'd need something that can take a total load of 1050W, or, if I can work out a rough estimate of his total draw do we just match that?  My experience with UPS's so far is purely APC and replacing batteries at work so I have no clue

 

Any help would be great, Thanks!

[W-L]

-SNIP-

 

A UPS doesn't need to be larger than the wattage of the PSU just enough for it to run all the components inside at full load to ensure it will always be on battery backup if a power failure occurs. What components are in the system, it will give a better idea of what is needed.

[Mattch23]

A UPS doesn't need to be larger than the wattage of the PSU just enough for it to run all the components inside at full load to ensure it will always be on battery backup if a power failure occurs. What components are in the system, it will give a better idea of what is needed.

 

Ah right, so I was roughly correct with what I was assuming.  Not sure what he has off the top of my head for the full build, but using mine as an example ( http://uk.pcpartpicker.com/user/Mattch23/saved/dzGwrH )

 

Would I be correct in saying that if my max load is 598w then aprox 22 for 1 screen at least  a 620W (minimum) PSU would be sufficient?

[W-L]

Ah right, so I was roughly correct with what I was assuming.  Not sure what he has off the top of my head for the full build, but using mine as an example ( http://uk.pcpartpicker.com/user/Mattch23/saved/dzGwrH )

Would I be correct in saying that if my max load is 598w then aprox 22 for 1 screen at least  a 620W (minimum) PSU would be sufficient?

 

Ok so if the system draws about an absolute max of 600W and with added monitors, peripherals and networking an extra 50 watts or so, something like a ~700W UPS unit should be more than sufficient.

 

http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BR1200GI&total_watts=200

http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BX1400UI&total_watts=200

[Mattch23]

Brill, just wasn't sure if it was PSU based of max load based aha.

 

Thanks ^^