Is this your first graphics card?
Then if you can afford it, I strongly suggest the 7750.
I am a person with a similar case as yours, I got a 210(think of it as predecessor of the 610) and I'm repenting for it.
The 7750 is not very pricy; the HIS and PowerColor for $89.99 on newegg(if you live in the US; other countries may have different pricing) whereas the 610 is $44.99 so basically double the price. But the performance in a game is close to 5 times.
lolz by mistake I wrote I can afford it instead of I cant lol my friend I cant afford it I am living in india its very high price for me sorry by mistake I wrote wrong I can instead of I cant sorry for written wrongly