I used to have a 1TB system drive (PCIe 4) with a heatsink and a 500GB game drive (PCIe 3) without. I later replaced the 500GB drive and got one with a heatsink. My system drive actually came without a heatsink, so I got a third party one for it at the same time. Both are Samsung 980 Pro drives now. So, theoretically I could compare if the aftermarket passive cooler is better than the original Samsung one, but I won't bother. There would be the airflow difference as well, seeing how one is above the video card, one well below.