Turn down the volume for the start. Might cause ear damage.
So basically don't bother. Every thing pointed out in text by the kind people above in video form.
Currently have an R9 290X and by the looks I wouldn't really notice a difference in games with a 580 but power consumption and possibly noise would go down.
Is it worth the switch?
Looked under every tab and did not find anything like that. There isn't even really a memory section to begin with.
Someone else had a similar problem and a fresh install of windows fixed it. I think ill try that.