GX 750 has got bad reviews.. And none of the reviewers recommend it saying that it is good for only upto 600W.. In cooler master 'real power pro series' and 'silent pro series' are only good other than that CM produces bad PSUs....
The price diff. must be 200-500 bucks depending on the location.. Where are u getting it from?
If u can wait till tomo i can enquire the prices in chennai locally..
So u wont be doing SLI/CF in future?