Guys, please don't just jumn in and start posting. OP hasn'e even posted the PC's config and mentioned his PSU knowing which is absolutely necessary before suggesting a graphic card.
[MENTION=282344]harbakshsingh[/MENTION]; please answer these questions-
> Post your full config.
> Which PSU do you have?
< What monitor do you have?
i dont know the psu i will check and tell you
i have windows 7 64 bit
1. Intel i3 3200 3.3ghz processor
2. 4 gb ram
3. Zotac nvidia gt 610 synergy edition graphic card 2gb
4. Ga h61m ds2 motherboard
monitor-Acer S190HQL 1366X768