In order to make some of their graphics card offerings cheaper, NVIDIA seems to be updating their NVIDIA GeForce RTX 4070 graphics card model offerings to use GDDR6 memory instead of the previous GDDR6X memory.
Previously, the NVIDIA GeForce RTX 4070 graphics card was equipped with 8GB of GDDR6X memory with a speed of 21Gbps, and with this new update, it seems that the memory used will come with a speed of 20Gbps. This difference in memory speed seems to be addressed by slightly overclocking the speed of the graphics processing chip.
This change is apparently done to allow NVIDIA to offer the GeForce RTX 4070 graphics card at a cheaper price tag, contrasting it with the three more powerful 4070 model graphics card offerings, namely the GeForce RTX 4070 Super, GeForce RTX 4070 Ti and GeForce RTX 4070 Ti Super.
The specifications of other components of this graphics card, such as the number of CUDA cores (5888 cores) and stream processors (46 processors) have not changed, so it seems that this graphics card will still be present with more or less the same performance as the model that uses GDDR6X 8GB memory before.
This change is expected to start soon, with graphics card maker brand GALAX apparently already starting to offer graphics cards with the "new" memory.