Suggest UPS for my rig

Get a APC 1.1KVA for 4.8k.

If you want it inside 4K, then Intex 1KVa @~3K

@Op- Better go for APC 1.1 KVA UPS. Its best in its class.

If I upgrade to 750W power supply later...Will 1.1kva be sufficient?

If I reduce my requirement of backup time to 5 min (will connect it with Microtek 800VA inverter)...Do I need 1.1 KVA or less will do the job ?

bajaj151 said:

If I upgrade to 750W power supply later...Will 1.1kva be sufficient?
It will be sufficient

If I reduce my requirement of backup time to 5 min (will connect it with Microtek 800VA inverter)...Do I need 1.1 KVA or less will do the job ?
You need powerful UPS based on system configuration and how many backup time you needed. But for your system 800VA ups can't take the load. When you will play resource hungry game, they pc will simply restart.

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here are some facts for knowledge purpose:
1.VA rating is different from actual power in watts.usually power(in watts)=0.6*VA
2.backup time is dependent on battery capacity inside ups/connected to inverter.
3.at full load(100% power in watts possible by ups) backup time will be ~4 min & lesser the load more will be the backup time.in case of inverter it depends on capacity of battery/batteries connected.
4.if power(in watts) is less than required power then no matter what capacity of battery is there it is useless.

Is it safe to connect pc directly with inverter.. ?

Asked Microtek (via email) regarding the same.
And they replied : You can connect computer directly with Inverter but input range shall then be selected on 180-260v range....

Practically 1KVa UPS can provide upto 835Watt of power at max. So, for your config, 1KVa UPS would be sufficient.

^^ But the backup is limited to 15-20 min..

What should I do, if I need 1 hr backup ?

^^ Not possible with UPS.
In that case buy inverter.

How much do I need to spend on UPS if I want atleast 1 hr backup ?