The review crew at Overclockers Club took the XFX Radeon R9 390X out for a spin. If you are GPU shopping you'll definitely want to read this review. The XFX R9 390X does what a next generation card should do. It outperforms the previous generation when it comes to the FPS performance delivered in each of the tests run for this review. Thanks to the improvement in core clock and memory speed over last year's R9 290X, you get a boost in performance that in several cases delivers stock performance between the GTX 970 and GTX 980.