SkyWreak
Discoverer
Adding a heatsink to a nvme is a good practice as they are passively cooled . But in my opinion you should have installed the 980 pro in the m.2_1 slot closer to the cpu which has the factory heatsink as the 1st slot is generally controlled by cpu directly and it will fetch you a slightly better performance. The second slot m.2_2 is connected via pch or a controller hence it can be used for slower drives like the wd sn570 .