The 750 Ti is a decent choice for virtually any system, but it has been superseded by the 1050. Only get the 750 Ti if it is enough below the GTX 1050 ($109) price point. The 1050 is a decent bit better than the 750 Ti, however it might not matter much if your CPU can't handle it. But a decently priced ($90 or below) 750 Ti is a nice fit for an FM2+ CPU either way.
That's what I really wanted to know, what CPU do you have? Also, what power supply do you have?