I still couldn't sit through it.
He really needs to switch to decaf and then learn a bit more about DMMs. But I was curious and watched enough to see that he ended up with a 100+ mOhms reading of the GPU core on a known good unit. But that still doesn't mean it behaves like a resistor--a V-I plot would be a more interesting bit of information. Perhaps DMMs should offer that--a 0-10mA sweep graphing a V-I plot.
Aha, you've just come up with the reason to get into SMU territory - they're even more fun (and $$$) than DMMs.
Just to be clear, I suggested the "cop-out method" ("cop-out" because where is the fun in not using an excuse to acquire more TE?) knowing the limitations, but it sounded like the OP wanted to measure something pretty close to a dead short. I also commented on some of the limitations if you're not dealing with a purely resistive DUT. I probably should have noted that this is for things that you know can take an amp or so without sweating - my examples were big chunks of metal!