I've seen a few things of people swapping 1GB ddr5 modules to 2GB ddr5 on 4GB AMD GPU's which make them 8GB. Looked kind of painstaking though so I doubt anyone is doing this in massive scale.
*512 modules to 1GB modules - the Rx series has 8 memory modules, and its GDDR5. Also it was a russian dude who managed to do it, it ended up costing him more in components and equipment than buying a brand new 8GB card.
A couple years ago Chinese buyers were buying back broken RX polaris cards for 40-50$ each - I suspect to do exactly this.
sounds like its possible, i have access to mem pre-balled with good pricing and labor work to do it.
but if someone finaly thinks can manage to take care about the SW, i think then its doabal.
who joins the ride ;-)
Well its definately possible since card makers basically sell both the RX 570 in 4GB and 8GB formats. So they are basically the exact same card except the 8GB obviously has more memory. There also might be different components such as better capacitors, mosfets, etc to handle the extra memory speed/power. So its possible.
Whether its possible to do with flashing an 8GB bios on an 4GB card is questionable. It might work it might not. However in the best I have tried to remove an old ASIC chip off an KnCMiner Jupiter because it had a dead ASIC chip and wanted to swap with a working one. Basically had 2 boards and both of them had 2 ASICs chips dead. So I figured why not just take off the dead ones and replace with good ones and throw the bad board away to save power.
Problem was that it was extremely difficult to remove the chip, I kept adding heat and it wasn't coming off. The capacitors around it started to move while the ASIC chip wasn't coming off. Finally got it off. Then had to do the same on the other board, took maybe 1 hour in total just to remove one chip. Then when they were off the installation was easy because the solder joints were big and you can use a regular soldering iron. Got everything back together and the ASIC chip that I replaced was dead. So wasted hours for nothing.
With a GPU, the solder joins are very small, almost like the strand of a hair, very difficult to get them off, put back on properly. Honestly its better just overpaying a little and getting an 8GB GPU.