Very useful, thanks for putting this video together, especially as it's the only one I've seen so far with the i9/580X combo.
Could you maybe do me/us a favour and post the Cinebench R20 score from that system here? The value in the video is R15, right?
And would you say that if I use the iMac for "productivity" (mainly photo editing, office stuff, running the occasional VM, some Logic Pro, maybe edit a video once in a while, but no gaming) I'd be happy choosing the 580X over the Vega?