Gtx 750 ti vs 660

Solution
The 660 Is ahead of the 750ti in terms of performance but the 750ti Is still one of the best budget options as i have owned one and loved it. I'd be taking the 750ti As from what i know they are probably more reliable and a lot more have been tested in the past but if you have the resources and stuff then go ahead for the 660 but still consider the 750ti.

Watch a few videos on the 750ti and the 660 to get an idea on it
The 660 Is ahead of the 750ti in terms of performance but the 750ti Is still one of the best budget options as i have owned one and loved it. I'd be taking the 750ti As from what i know they are probably more reliable and a lot more have been tested in the past but if you have the resources and stuff then go ahead for the 660 but still consider the 750ti.

Watch a few videos on the 750ti and the 660 to get an idea on it
 
Solution
Yeah. The 660 is better performing but the 750ti is probably going to be more reliable since I haven't heard many bad stories about the 750ti and the 660 seems to have a thing about randomly dying.
 

Not to mention GTx 660 is a power hungry GC with TDP of 140 watts and GTX 750 Ti with just 60 W !