zanthereadl :
Cpu pentium dual 2.88ghz e5500
Ram 3 gb
Gpu geforce gt 610 2gb
Replace gpu with good gpu which can run latest games
Budget7000 rs
clutchc is right it depends on your PSU, Your current card only uses 29 watts and thats nothing compared to the 100+watts used by good cards. All that aside a small step up that would work for you is an AMD Radeon R5 230, its a decent card that only costs 50$ and uses only 30 watts of power straight from the motherboard.
Update: a GT 730 uses a very small amount of power too and if you get the GDDR5 version its a huge step up from your current system for only 65$