NVIDIA's GeForce 6800 Go vs. ATI's M28: The Mobile GPU Wars Begin
Nvidia will reportedly release a mid-range Maxwell GPU - the GTX 960 - in January - ExtremeTech
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
128 Bit Vs 256 Bit GPU: All Differences (Detailed Guide)
What's the difference between GPU Memory bandwidth and speed? - Super User
How GPU Bus Affects Video Memory
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