I have to write this comment, to those who are saying that Xbox Series X will be a 9 - 10 RDNA TF console, no, it will not, you may ask why, I'll tell you why:
I won't jump to the huge amounts of insider and journalists which they all said or pointed out that it is a 12 TF console, guys like Jason Schreier, Kleegamefan, Matt from ResetEra, Digital Foundry, Windows Central etc etc...
I'm just gonna jump on the SoC chip itself picture that was shared by Phil Spencer, that chip is HUGE, It is gargantuan, and many tech experts have made measuring and concluded that it is a 52 to 56 CUs chip, so why would they build a HUGE chip like that only to get a 9 to 10 TF console? No they wouldn't do that, they have built this chip to clock it accordingly to achieve that 12 RDNA TeraFlops figure.
Just look at this chip LOL!!