It must vary then I can boot 7000 with both sticks and y cruncher stable at 6800 on my 2021 Apex but getting Karhu stable on slot 1 is the challenge. 6400 is easy but 6600 to 6600 is difficult.
So for me on old Apex a good 400 to 600 below what I could boot. This is with Hynix sticks. Never had...