Here is my RTX 3090 with 24gb of GDDR6X memory, only thing up with it is that the left fan spins all the time not very fast not very slow, but under normal load all the 3 fans spins like normal and the left one picks up the speed to match the other 2. Other 2 fans work perfectly fine.
That is the reason it is one of the cheapest 3090 on Ebay market currently