You have a small dilemma. The gpu is the body of a graphics system, but the psu is its heart. Back in the days of DOS when a dx2-66 was king a gt210 would have been a great card to have, but with progress and the fact that modern cpus are extremely more powerful than those old DX's, the gt210 is basically not good for more than Microsoft Hearts or low res mine craft. With a decent sized psu you can power a better gpu, but here psu size definitely regulates just how powerful a gpu can be. If you have a standard, stock, run-of-the-mill type 350w psu, the absolute best possible gpu is the gtx750ti, without additional pcie connections. 600w will get you a r9 280 or gtx970 or below and a 1000w monster gamer will run anything.
So, what is your psu, are you going to upgrade that possibly, and what's the budget? Your cpu would balance well on a gtx760 or r9 280 at best.