My MateBook X Pro can sustain 2.1GHz on the desk for 5 minutes before shutting off due to VRM overheating (working on solving that right now), but this stand allows it to sustain 2.7GHz indefinitely. As a bonus, I removed the bottom lid altogether and just let the Noctua blow on the laptop's heatsink directly. No thermal throttling at all anymore. 3.7GHz on all 4 cores. I might just use that when my laptop's staying on the desk for a long time.
The biggest benefit of using the Noctua fan instead of lower-quality off-the-shelf laptop coolers is that the former is much quieter.