Nvidia is preparing a new generation of desktop graphics cards and it is estimated that the most powerful model will be the GeForce RTX 4090 with 24 GB GDDR6X memory like the last generation. However, when it comes to the category-poor GeForce RTX 4080 model, Nvidia has finally learned its lesson and according to sources Megasizegp’s twitter account It will also have a lot of memory.
It is said that Nvidia is preparing two main variants of the GeForce RTX 4080, which is expected to rival the performance of the GeForce RTX 3090. The sub-model should have 12GB of GDDR6X memory, similar to the current GeForce RTX 3080 Ti. The higher model will offer 16GB GDDR6X.
4080 12G GD6X 10-layer PCB aic reference design
4080 16G GD6X 12 layer PCB aic
reference design
4090 24G GD6X 14-layer PCB aic reference designnote：4080 12G has a completely different pcb design from 4080 16G
— MEGAsizeGPU (@Zed__Wang) September 5, 2022
It will also differ in the card itself, within the reference design of the cards. The 12GB version is expected to have a 10-layer board, the 16GB version to have a 12-layer board, and the upcoming top-of-the-line GeForce RTX 4090 is expected to have a 14-layer board.
But the question remains which memory bus or with what bandwidth Nvidia will use for each variant, and if that could cause even more difference in performance. For example, Nvidia may use a faster 256-bit bus for the 16GB version and a 192-bit interface for the 12GB model.
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Source: Doupe
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