>I have a PIII-800 box with two X100P and one TDM400P plus graphics >adapter, an IDE hard drive etc. Will a small 400VA box be enough for >this?
It's tricky sizing UPS'es to be bang on the money. The rule-of-thumb calculation for VA is watts/.6 . So, for a 200 watt power supply / .6 is 333 VA. Tricky part is, a 200 watt PSU is max power, which your PC will not draw all the time. You want to be bang on the money, so you have to determine the watts of every individual component like this: (numbers out of my ass) HDD 35W Mobo & CPU 80W Video 10W NIC 5W TDM400 20W ---------------- TOTAL 160W = 266 VA In my experience, oversizing your UPS gives you a comfortable margin, and these days, pricing between, say, a 400 to 600 VA is minor, and you get added runtime as a bonus. But if you want a decent runtime on your box, and it's of the 200W PSU variety, the 400VA will probably be OK given what you have stated. hth _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
