Dude, dont bloody literate me on the basics. Buzz off. Watch youtube benchmarks done by the pro's and come back to me. I know wow, as most games, preffers single threaded performance, but my point still stands, that a 2080ti is not even enough for max details 1080p, especially if you actually use rtx on, which wow will support in SL apparently...Yes you can turn down settings and play wow on Intel HD, but whats the point? If I buy a new PC in 2020 I don't want to play the game like I do now...low/medium settings, often seeing 20-40 FPS in heated combat. Also recently wow did get multi-core support, but not even that did too much, so value a good GPU over anything else...Like litterally a 3600 and a 2080ti would be a fine match from my POV...CPU's have gotten so damn powerful.
Edit: Cause I know you "pro's" on these forums think Im to ranty here ya go...bothered to google this pic which I saw floating around before https://imgur.com/a/UtTRS4d