AMD Radeon RX 6900 XT LC with Navi 21 XTXH GPU has been tested - VideoCardz.com
AMD Radeon RX 6000 "Big Navi" Navi 21 XT & Navi 21 XL GPU Power Figures Detailed - Up To 320W To Match The GeForce RTX 3080
AMD Navi XTXH, XLE, and Nashira Point variants spotted on USB-IF: XTXH could be a possible Navi 21 variant with HBM2(E) support - NotebookCheck.net News
AMD Radeon RX 6000 series rumoured to boost up to 2.4GHz - Graphics - News - HEXUS.net