I have the same problem with the 3080 Gainward Phoenix card. Initially I put it on my rig, it made me lose 24 hours trying to adjust everything! So I put it in a separate machine, testing it with a riser, testing it directly in the motherboard slot, I tried all kinds of OC configuration, my temperature is normal, below 50C; So I have realized that it may be a problem with the production of the card or limitation of the BIOS of it with OC, because when I use it without any OC it works normal, something happens with this model that hiveos doesn’t know how to work on. I haven’t tested it on another system, but it seems to me that the hiveos script that collects temperature information and the fan goes into a loop trying to get information and can’t.
I have 3080 from zotac that runs the OC quite high and is stable at only 213W; This Gainward to work with any OC needs to be 240W.
3080 Gainward Phoenix model supports up to 2050 MC; 1050CC with 240w PL in my tests: 93MH/s
This limitation of OC does not make sense, I use 25% more in zotac and it delivers 100MH/s stable.
Any gain above that for Gainward, stable, is to be happy!