This is yet another rumor from a leaked slide … probably won’t happen, as AMD is working hard and planning their next-gen RX 7000 series later this year.
Taken from Videocardz … A photograph of a screen (literally) mentioning Radeon RX 6900 XTX has been shared by the Twitter user with no history of similar leaks in the past. While the slide could be real, it may also be outdated.
AMD had made a decision to launch Navi 21 XTXH GPU for ultra-high-end models equipped with typical air coolers. Those models include ASRock OC Formula, Power Red Devil Ultimate series, or Sapphire’s Toxic Air-Cooled. In other words, AMD has little to no reason to launch another model featuring nearly identical specs at this point.
The slide only mentions one change which is an 18 Gbps memory upgrade, already present on RX 6900 XT Liquid Cooled model which launched exclusively for OEMs and system integrators. The alleged slide also lists FP32 compute performance of 24.93 TLFOPS, matching RX 6900 XT LC boost clock of 2435 MHz.
Source: Videocardz, @CyberCatPunk