What ?? so much problem for one PSU ??
Listen Guys, the default one which will come with local made cabi will be more than enough to RUN up to any Modarate config without GRFX card and single HDD + DVD RW and no OC...
when u plan to add 2 or more HDD and one card like 8400 GS with some oc of procy like E6750 with 4 gigs of RAM, u need SMPS like ColorSit 500 watts, comes around Rs. 1600 to Rs. 1800.
Well thats not a brand which is avilable all over India, I buy it from Kolkata..., so can go for Zebronics or such under Rs. 2k for 550 or 500 watts for that avobe confir...
now if u want to run 4 320 GB HDD with 2 or more Optical Drives, use all USB connections, run high performance RAMs and 4 gigs of it, and OC procy like E6750 or Q6600 with High end mobo and use Coolers like ThermalRight Ultra 120, think of PSU like Cooler Master 600 watts Extreme or more, Rs. 4k
now if u have a too much of Mooding in ur Cabi, i would say use 2 SMPS rather than gooing for more Higher 700 watts ones
Problem is the local SMPS would say 400 watts or 450 watts but in actual picture they provide 250 or MAX 300
See, if u use a UPS such as APC which comes with software like PowerChute, that will give u an idea about what exact is the power provided to ur CPU
Hope this would help...