Good temperature? around 85C on the GDDR6 and over 60C on the GPU is good for you at 100% fan? Not for me sorry. And thats why i said - not worth - to much work, extra costs and not really more efficient, and you loose your warranty for the card.
85C is to high!!!!!! We have no summer and GDDR6 work up to 95C so you have only 10 degrees left. And keep in mind you only reach this with 100% fan. In other cases all say - ba why let you run your fans @100%, this will kill the fans fast - or - all over 70% fan will kill the fan fast and so on. And now it is no problem for all to let your cards running at 100% fan. Don´t unterstand the mining community - everyday a new "standard"
In my opinion we must unlock the RTX 4000 - this card do out of the box 37mh @ 80 watts - but it is locked for OC. This card run at 50C GPU / 65C VRAM with 75% fan