I heard from a fellow miner that there are 3090s out there with memory from Samsung doing 131Mh at 330w manufactured by a certain AIB, I told him that's impossible as all 3090s use GDDR6X which is manufactured by Micron. The only possibility I could think of is a 3090 running the fastest GDDR6 memory from Samsung with custom bios and timings.

Could this card exist?