Hi, as you can from see from my previous posts I installed Linux in all my machines. Now I have a PC with an I5 6500 (with Mint on it) and I’m upgrading the GPU. So, do I just open it put the new one and connect the cables? Or do I have to do some thing first? Thank you for all your help.
Not strictly true any more. There are Nvidia open drivers, but they may not be in Debian yet. In fact, Nvidia recommend using the open drivers for cards it supports, which if I recall correctly, is Turing and newer.
You’re thinking of firmware, not drivers. To make a GPU work, you need new enough versions of the kernel, driver and firmware. The open source drivers for Nvidia GPUs are still slower and less featureful than the proprietary ones.