Suggest some good PSU in Rs.3500

I previously used an iball PSU and want to replace it with a good one.
As i don't have the proper technical knowledge on PSU compatibility so I've uploaded this iball psu picture for your reference which was installed in my cpu.
*tapatalk.imageshack.com/v2/15/03/25/465c8c0990e0e5b72b350179bdd45eab.jpg
cabinet- frontech rough
Mobo- gigabyte H81M-S1
i3 4130
2 gb ram
500GB WD HDD
No gpu

I use my pc for gaming and internet purpose.
Plz help me choosing a good psu under my budget.
thank u