Ayush123 :
Yes its for gaming ....I also wanted to ask if I would game with c2q q6600 and gt610 2 GB in low setting in 720 p for AAA games??
The GT 610 would be holding you back. Definitely below AAA game requirements. Most new AAA games would only run at 10-15fps. If you are using the GT 610, I don't think any CPU upgrade will help you very much.
Please list your upgrade budget and all of your current system specs and the brand and model if it is a pre-built PC. This will better help me guide you in your upgrades.