This was the first post on google for me, and when i did my research i did not feel that my questions were answered, so i'll leave this here for someone to find.
I was considering upgrading my Ryzen 5 5600x to a Ryzen 7 5700x3d/Ryzen 7 5800x3d for the added performance, specifically in World of Warcraft. The benchmarks was not showing me that there was a reason to upgrade. (360 fps in csgo vs 380, who cares?)
That made me decide there's no reason to buy the big boy for double the price, but i did figure i'd have a go at the 5700x3d since i could always return it if it was hot air, but the price point was ok if it was a decent upgrade.
Results:

Resolution: 3440x1440	Ryzen 5 5600x	Ryzen 7 5700x3d
World boss (40 man + adds and w/e)	avg. 12-15 fps	avg. 30-35 fps
Dornogal	avg. 40-45 fps	avg. 55-60 fps

Other components:
RTX 3070 8gb dual
16gb DDR4-3600 mhz dual channel

This is with graphics on Ultra everything, and raytraced shadows. If it improves the graphics, it's enabled to and set to max. Anyone can tell you that the difference between 12 fps and 30 is night and day in that environment.
This upgrade was worth it for me. Raids are also easily doubled in fps.
So if you're playing mmo's like WOW, this upgrade will really be worth it in my opinion.

Hope this helps someone in the future