actaully its around 1300$ if your planing long term thats a good price.
about the performance I suggest you to go check the benchmark results ...
benchmark performance is ok to reference when trying to decide what to purchase, you have to look at more than 1 and take care that the tests are the same. i have long term for about $900. even low end dual 7970s cost as much as my system without the video card, and i have absolute zero need for dual video cards. until there is a real need for 2 graphics processing units running in tandem and 6 gigabytes of graphics memory, i'd rather pocket the money for bills.
i've looked at the performance benchmarks since the fx cpu's were released. decent but not competitive against intel. phenom2's performed better per clock cycle until the latest gen of fx cpu's. they are still not competitive vs intel on a per core, per clock cycle basis. and i'm running an amd phenom2 black.
the radeon memory performance is about the same as the kingston hyperx xmp memory. the timings and voltages stink for what is supposed to be "high performance" memory. better memory can be purchased from corsair, crucial and even gskill at this point.
that asus mobo you linked won't support the memory you also linked at the advertised speed. if you want to run 2133 memory you will have to step down a couple of models or go higher end, like to an rog crosshair v formula-z.
