Varies greatly based on encoder. NEVC vs CPU etc
Not asserting this isn’t the case, I’ve not noticed it, but I can’t see why this would be the case for the actual encoding. Decoding I’ve seen it make a difference but that’s mostly the pre-Skylake iGPUs using a poor implementation of QuickSync.
Mate I’m still riding (or dying) with my 4700K! On my third motherboard for it, but they’re super cheap now.
And yes I’m probably going to be skipping LGA1700 (as well as LGA1200). Unless you count laptops then I’ve got a 6th Gen and looking at adding an 8th Gen.