The good news: your GPU supports the G07 driver.
The (bad?) news:
The Nvidia non-free repo is updating so you missed some packages (the mirrors in my area updated just when I was checking this, YMMV).
Stefan’s blog generally is up to date and accurate, but here IMHO for a full fledged install it lacks something, since apparently current instructions (at the time of writing this line) install the open kernel driver but not the userspace packages needed to drive a desktop.
In my view you need:
zypper in nvidia-open-driver-G07-signed-kmp-meta nvidia-userspace-meta-G07 nvidia-compute-utils-G07
and answer the conflict that arise, deinstalling the G06 packages etc.
I don’t have such hardware so I cannot check, don’t go ahead if you don’t know what you are doing until another expert user chimes in.
Let’s see if @sndirsch can comment on this.