Whats the difference between these three cards?

Solution
The ACX cooler, according to some reviews I have read, works really well with the SC card(s), but I don't know exactly what EVGA internally to make it better. I do know that it dissipates the heat within the computer case as well as out the back. This is not generally a drawback or negative feature if you have the airflow in the case to deal with it.
The reverence cooler on the other card blow the heated air out of the case. For MY purposes that was what I chose, but you will need to decide based upon your build and its airflow and if the higher clock speeds are worth it.
Hope this helps.
Only the clock speed of the GPU and memory. Both cards are excellent. I got a great deal on SC cards from Best Buy last Jaunary and I run SLI; two of them really do well. Friend has a single card, he loves it (though he's not much of a gamer).
I don't think you would recognize any difference between the a reference card and an SC card .
Don't forget to register with EVGA for the 3 year warranty, and the extended warranty from them is pretty reasonable.
 
The ACX cooler, according to some reviews I have read, works really well with the SC card(s), but I don't know exactly what EVGA internally to make it better. I do know that it dissipates the heat within the computer case as well as out the back. This is not generally a drawback or negative feature if you have the airflow in the case to deal with it.
The reverence cooler on the other card blow the heated air out of the case. For MY purposes that was what I chose, but you will need to decide based upon your build and its airflow and if the higher clock speeds are worth it.
Hope this helps.
 
Solution