Didn't we determine that calculator was a little sketchy, Rohan? It calculated my current system (minus the LCS - which only uses about 15w on 100%) to use 115 watts I think it said. And I put in all the right data. It's ok, but I wouldn't trust it. I'd go off of manufacturer's 100% usage spec. 650w minimum to be safe, I'd say.
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07