Guys , I'm planning to buy a new UPS , but not sure which one to get . I hope you guys can help me out find the optimal product for my needs .

These are my system Configuration

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Motherboard : Gigabyte GA-X58A-UD3R LGA 1366
Monitor : Samsung ToC T240HD Rose Black 24
PSU : Corsair CMPSU 850TX ATX 12V 2.2/EPS 12V 2.91
GPU : 2 X HIS H585F1GDG Radeon HD 5850 1GB 256 Bit [Crossfire]
Processor : Intel core i7-920 Bloomfield 2.66 GHz
Cooler : Corsair cooling Hydro series CWCH50 120mm
RAM : G.Skill PIS Series 6GB (3 x 2GB) 240 Pin DDR3 2200
Speakers : Logitech X-540 70 Watts 5.1 Speakers

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Case : Cooler Master HAF 932

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Thnx & Regards Shawn