The Radeon RX 6500 XT is said to use all 16 CUs in the Navi 24 GPU, packing 1,024 Stream Processors, as well as come with 4GB of GDDR6 memory on a 64-bit wide memory interface. It should also pack 16MB of Infinity Cache.
The Radeon RX 6400 could be the next entry-level GPU in the Radeon lineup, featuring a cut-down Navi 24 GPU with 12 CUs, packing 768 Stream Processors. The good side of the story is that it should still come with 4GB of 14Gbps GDDR6 memory on a 64-bit memory interface.
Leaked over at Videocardz.com, these two new Radeon 6000 series SKUs should be officially launching in Q1 2022.