NVIDIA could update the higher end of its GeForce RTX 30-series "Ampere" product stack with two new additions in December 2020. Sources tell VideoCardz that the company is preparing to launch a 20 GB variant of the GeForce RTX 3080, and a 16 GB variant of the RTX 3070. The RTX 3080 20 GB will come with double the memory of the RTX 3080 the company debuted last month, over the same 320-bit wide GDDR6X memory interface, possibly by using two 8 Gbit memory chips per 32-bit path (which is how the RTX 3090 achieves 24 GB, over its 384-bit memory bus). The RTX 3070 16 GB will likely use a similar approach, albeit with GDDR6 memory. Meanwhile, the mid-range "RTX 3060 Ti" could debut in November, following the late-October introduction of the RTX 3070 8 GB. Much of NVIDIA's product stack adjustments could be in preparation for AMD's late-October reveal of the Radeon RX 6000 RDNA2 series.