AMD Radeon RX 6000 series: Up to 80 CUs with a 256-bit memory interface, 128 MB of Infinity Cache, a 300 W TDP and PlayStation 5 GPU clock speeds - NotebookCheck.net News
Rumors: Navi 12 is for Radeon RX 5800 with a 256-bit bus and Navi 14 for Radeon RX 5600 with a 128-bit bus - UmTale Lab
Difference Between DDR4, GDDR5, and GDDR6 Memory | Hardware Times
Can OEMs reduce the number of CUDA cores in a GPU? : r/nvidia
128 Bit Vs 256 Bit GPU: All Differences (Detailed Guide)