Yeah, the 1172MHz of the X's GPU still blows my mind. I'm not sure why people are expecting 1800MHz when Radeon VII can hardly hit that target.What is the highest clock speed a console has ever run? Because unless people think the form factor of a console will change dramatically, I think there is a bit of wishful thinking on these clock speeds when you take into consideration a thin, small console form factor.
It's not always a question of what the chip is capable of - sometimes it's a question of what can be run at nearly 100% for 5 years with very low defect rates.
Not saying it's impossible - but seems very unlikely.
I think that we need to temper our expectations to something closer to 1400-1500 MHz.