How do I choose between the various versions of the same Nvida graphics card model? I'm looking at the 750ti, but there's a bunch of different versions. Do they just run at slightly different clock speeds because of different cooling solutions? Maybe different output port selection? Any other differences?
If it really is mostly just slightly different clock speeds, is 160MHz worth $10, or should I just go with the cheapest 750Ti: http://www.newegg.com/Product/Product.aspx?Item=N82E16814487025
Edit: It appears the GeForce GTX 750 Ti and GeForce GTX 750 Ti superclocked are actually different GPUs. What does superclocked actually mean, and does it amount to anything other than clock speed?