EVGA GeForce RTX 3060 Ti XC
It does bring temps down a bit, no real reason to use 0 to + core as it only brings temps up and nothing more, up to -300 I don't see any downside on mh/s. I use hive os if it matters.
i use 3070 with -300 core i not see any different in MH or temp compare with core 0