https://wccftech.com/amd-navi-21-xt-big-navi-gpu-for-radeon-rx-6900-xt-2-4-ghz-clocks-16-gb-gddr6-vram-255w-tgp-rumor/

Specifications of the AMD Navi 21 XT "Big Navi" GPU for the Radeon RX 6900 XT graphics card have been reported by Patrick Schur who has been very credible regarding his information. According to the reported specs, the AMD Radeon RX 6900 XT seems to be a beast of a graphics card with insane clocks.

Patrick states in his tweet that the AMD Navi 21 XT GPU which is allegedly the "Big Navi" GPU that all enthusiast gamers have been waiting for will be an insane chip. As per previous reports, the 21 XT GPU will be featured on the Radeon RX 6900 XT graphics card but there are also reports that a faster XTX variant exists which would be even faster.