Gaming Laptop GPU and Cooling Pad

My GPU runs hot. Not hot enough to do any damage as the card won’t let it get near NVIDIA’s max temp. I’ve tried cooling pads in the past and returned them all. Just came across one that came as a freebie with another gaming laptop I once had. Thought I would give it a try.

Here’s the thing: Temps are exactly the same, BUT my hashrate is now 30% better. Can anyone shed some light on this?