I'm around to get the knowledge to be able to choose between the two cards –
4Gb version is cheaper by around $50, which is $300 by 6 cards.
So it's worthy to know if is it really weaker? How much?
I found the tech specs, etc... but doesn't really find the answer about if it worths / or will worth to have the 8 Gb version.
E.g. There is a probability the optimized miners will (significantly?) perform better on that, due to more ram, or it's really nothing to do with mining at this point.
What do you think?