My PC rig is gtx 960 FX 8320 and 8gb ram. I wanted a new graphics card and I'm thinking of RX 480 or gtx 1060. But then I found out that my FX could maybe bottleneck these newer GPUs. I'd like to know if I should just oc my FX and go for RX 480 or gtx 1060 or just get a better CPU first.