Before the illicit Bitcoin surfaced, video cards slugged it out with game rendering. The incumbent RTX 2080 was expensive thanks to NVIDIA raising the prices by $100 over the previous Pascal series. The warranty has lapsed but the card is thermally stable.
Some video cards procured from miners showed some models are not thermally stable. The EVGA GTX 1060 3GB with one fan tends to overheat. Even after repairing the card with Arctic MX-4 the card still overheats.
The RX 480 8GB card has two fans which keeps the card stable no matter the workload. Playing Halo on the RX 480 at 3840×2160 was eye opening. The Polaris 10 is as powerful as the XBox One X which was the last of the previous gen consoles. For quite a while the drivers for the RX 480 were problematic. Eventually using the last WHQL driver tended to be adequate for gaming.
I paid C$99 each for one GTX 1060 and one RX 480. The RX 480 has more than double the VRAM of the NVIDIA offering. For gaming extra VRAM is desirable at higher resolutions to hold the game mesh and the textures etc.
Now that the studio has the RTX 2080, the gaming experience at 3840×2160 is fairly robust. The desire for a RTX 3080 was perverted by the rise in Bitcoin prices. It seems that lately any card from the last 5 years has been put to work again.
If anything happens to the RTX 2080, the RX 480 can handle gaming. The panel can reduce screen resolution as necessary but that is necessary as some old games are not able to display 3840×2160.
Looking over for some used video cards on fleabay saw a GTX 1660 6GB for US $489+shipping which is over double MSRP, ERTX 3080 cards are $1700+shipping. Gouging is a crime. NewEgg showed many third party sellers with sky high prices of triple MSRP for RX 6700 and RX 6700 XT, the high prices spanned the whole lineup.