I have not seen any throttling in my running of the Premiere Pro Benchmark which writing to the 950 Pro is done at ~1500 MB/s see the attached 60 second write test at a full 1.5 GB/second without any noticeable throttling. I did have a fan in the general vicinity. Task Manager is not great for seeing the results
If you look at the Disk Transfer Rate plot under the 2 GB/s marker line you can faintly see the performance of 1.5 GB/seconds is very constant for almost 60 seconds (actually the test went on for 72 seconds because I wanted to see startup). The slight glitch you see in the usage is when I had to uncover windows. Notice there is a similar spike in the CPU usage.
I have frequently applied the finger touch test and never gotten uncomfortable (not very scientific but the 950 Pro does not support S.M.A.R.T which would give us temperatures). I doubt you could ever see any throttling in editing. That export resulted in a 108 GB file written in that 72 seconds. This was a special stress test with three normal PPBM Disk I/O sequences where as you might guess each one normally takes 24 seconds on the 950 Pro on my system.
I have not been able to visualize an editing situation the would be more stressful so I doubt you will ever see any throttling if you have some reasonable air flow.
I think the heat will rise when you stress test the 950 to the max.. I dont see that happen very often in real time work situations. I will recive mine new build machine this week with the 950 inside. I cant wait to check it out myself
Just a quick update...I noticed the drive is usually idle at 50-52 degrees C. And its not even being used...The m.2 slot on my motherboard is right below my 1070 gtx which has a triple fan likely blowing right into it.
Decided to mount a 120mm fan on the side panel blowing in directly at the 950 pro. It's idling at 40-43 degrees right now..And its about 85C out with no AC in my condo. Pretty dramatic results.