How much power a normal Desktop computer consumes? Help me to buy a Generator for power

Ashley

New member
backup of PC.? I am planning to buy a portable generator for which I have to calculate power requirement. We have 12 desktops with following configuration
1. 17" LCD monitors with 35W power rating.
2. one Intel P4 3.0 GHZ processor (single core)
3. one 1GB DDR2 RAM
4. one 320 GB SATA HDD
5. one 400 W SMPS power supply unit (PSU)
6. 750 VA ups connected individually to each PC
we use these desktop for internet browsing and word processing. so they don't have graphics cards. We don't need to use printer, scanner etc.

I have estimated to consume maximum of 200W per PC so with safety factor I am planning to buy 3KW generator (3.3KW maximum output). Its KW not KVA (power factor 1) . We don't have to power other electronics devices behind 2 DSL and ADSL routers and one switch with generator.

Will it be sufficient? What do you suggest ?
What other factor do I have to consider while buying a Generator except brand name?
 
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