IMHO RAM>CPU. Anything released in the past decade will kick ass if it has a good amount of RAM. I still game on a 2016 desktop PC.
EDIT: Please correct me if I am wrong, but 10,000k INR =~ $100. If that's the budget, then I highly suggest an IBM ThinkCentre Tiny. They use to sell for ~$100 (used or refurbished). They have no moving parts and make for great headless units.