There's no difference other than the amount of memory buffer. If you play at high resolutions (IF you also like cranking AA to max) the 8GB would perform better. Otherwise if you play at 1080p, the most common resolution for users, it will be fine.
There's no difference other than the amount of memory buffer. If you play at high resolutions (IF you also like cranking AA to max) the 8GB would perform better. Otherwise if you play at 1080p, the most common resolution for users, it will be fine.