https://wccftech.com/nvidia-tsmc-7nm-euv-high-end-gpus-samsung-7nm-low-end/

DigiTimes just published a massive report (hidden behind a paywall) that sheds some light on NVIDIA's plan for Ampere GPUs as well as their future plans. It had been rumored that NVIDIA was thinking of going with Samsung's 7nm process but those rumors appeared to have been debunked. As it turns out, and if DigiTimes report is to be believed (and they have an excellent track record for what it's worth), there was some credence to them after all and NVIDIA is considering dividing its lineup into TSMC and Samsung's 7nm process.

So here is what happened as per the Digitimes report: NVIDIA wanted to lower its dependence on TSMC and was courting Samsung to use their 7nm/8nm EUV process. Since NVIDIA is a fabless company, this was an attempt to diversify away the risk. According to the report, the company decided, in the end, to go back to TSMC. Unfortunately for them, however, AMD had taken this opportunity to buy up spare 7nm capacity aggressively and established itself as the name behind the world's first 7nm GPU. The report also states that one of the rationales behind approaching Samsung was for TSMC to lower their pricing. Considering TSMC is now operating in a high demand, low supply ecosystem, I am fairly certain NVIDIA did not get their price cuts.