The rig will be used entirely for gaming and browsing, no video or picture editing of any kind. Play most of the popular FPS, Black Ops II, Planetside 2, also Skyrim, whatever is out I normally like to play. Although I would appreciate comments on the build in general (although I should mention that the SSD was on special down to $169 before anyone comments on why I chose that one), I am really curious about the advantage of adding a second 7870. I really struggled to find benchmarks with 12.11 drivers that show the performance of xfiring these cards vs a more powerful single gpu.
I know the normal suggestion is to go with the single card so you can really upgrade down the road, but I just don't see myself ever needing to xfire two 7970's, as an example, when I game on a single 1080p monitor.
FYI this is my first post and any suggestions on how to post in the future to make your job easier would also be very welcome.
its better to have a single 7970 over two 7870's like you said you can add another card down the road but also if you have a single card you know it will be fully utilized, when a new game comes out you will experience less driver issues as crossfire profiles are added later on so you wont have to worry about how much scability the game provides, less heat, its also easier to upgrade when you have to sell a single component vs two, one less fan to run in your case so the system will be a little quieter