Exactly. I agree wholeheartedly. That was kind of the point I was trying to make before.
I don't think however that the 9400F is a good choice, considering the benefits of any of these Ryzen CPUs, and given the possibility that you might, and probably WILL, ditch the idea of an eyefinity display at that resolution at some point, in which case the fact that you HAVE a more capable CPU, whichever one you choose, might be beneficial.
Also, if you have ANY plans to record, stream or simultaneously be doing ANY other kind of demanding multitasking, then those extra cores or hyperthreads on the Ryzen models might be of further benefit to you over only having the basic six cores on the 9400F.