|Unless you absolutely need it portable, stay with the desktop, laptops with the same or similar specs or abilities, will cost you much more money.|
I do not know India currency so I will lay out some basics.
Modern quad core processor -- Intel 3rd or 4th Gen. i5 processor or AMD equivalent.
Four RAM slots with 16GB RAM 1600MHz installed
Discrete graphics card at least GTX650 Ti or equivalent.
Power supply at least high enough to power your system with your choice of graphics card. DO NOT get a cheap power supply, they are not worth the problems they cause.
If that comes out to be too much, do the best you can. Remember that it is easier to add memory or upgrade graphics later, where the CPU and motherboard pretty much define the machine for the future so focus on that.
You have to be a little bit crazy to keep you from going insane.