I Currently have Two HD 6970's in CF, but i'm looking for more power . Am I better sell my 6970's and get a R290x?
Most likely, the 290X will be a better option, both for lower power consumption, superior OpenCL performance, and overall a better 'punch'.
That being said, we don't really know, since we don't have benchmarks yet.
Get the R9 290X.
-Single card, so you won't get a lot of problems CF brings
-Lower power consumption
-Better performance
Single card every day of the week man.