I dont think they do. I run CB2077 today for 2 hrs with ~550W GPU draw and connector and cables were barely warm to touch. As long there is no issue with contact, its more than enough.They seem to have really dug themselves a hole with this cable. I can see them starting to refuse returns with melted sockets before long. I mean if they are getting problems with the 4090 things will go crazy with the 4090ti.
Oh and thats on Asus 16pin cable that splits into 2x6pin on psu side