Thanks everybody, TDF has helped me a lot in picking my built... all credit goes to you.
@topgear: I bought from MD, Kolkata. The products were in stock & the prices quoted were the best. Though I had to pre-order the HAWK & MoBo.
@ssb1551: Yup, Frostmourne is the sword of the Lich King which Arthas possessed after becoming the Death Knight.
And I plan on going SLI after the price drop (6xxx release). Though 650W would have been sufficient, I chose the PSU keeping headroom for overclocking, HDD expansion & more robust cooling solutions
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