As far as the latest RTX 50 series gaming GPUs are concerned, NVIDIA has been using the GDDR7 modules from Samsung, but the latest report suggests that the company has started accepting memory from SK Hynix as well. As reported by @Zed__Wang, NVIDIA started outsourcing the GDDR7 memory modules from SK Hynix recently, and its RTX 5070 is the first GPU to get these.
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