Should note, that if someone has figured out how to pull out better hotspot data from an NVidia card, someone else could fold that into the (open-source) Linux driver for NVIdia cards. You might not even need to be especially acquainted with NVidia or Linux drivers, if you enlist an LLM to help.
In a recent exercise I asked an LLM to introspect current and older versions of the AMD video driver(s), and the LLM did surprisingly well. I was building a fan-control service for an old AMD datacenter GPU that lacked working fan-control. The LLM was able to ensure that the service was entirely proper and that could be expected to work with different driver versions. The LLM was even able to spot that the “common knowledge” names for the different hotspot measures were slightly wrong.
I do not have a recent NVidia card, so lack interest and means of test.