Power Estimaterr

[Sathish]

Is there any software for estimating total power requirement for all hardware components in computer...

 

[pillainp]

Try this one:
eXtreme Poser Supply Calculator.

Keep in mind, though, that you will at best only get a close estimate of what your system requires.

 

[channabasanna]

Also found one of the links :
*educations.newegg.com/tool/psucalc/index.html