||As more and more people become interested in cryptocurrencies such as BTC, many have chosen to do mining by themselves. CPUs and GPUs are crucial for mining process, therefore graphic cards with high performance (such as RTX 3090) are inclined to become sold-out due to the miners of BTC. As a result, the supply and the demand of such graphic cards have become extremely unbalanced, causing the rise in the price of graphic cards. However, when the BTC value drops, the demand for high performance graphic cards would decrease, causing the price of graphic cards to become closer to normal level. Both the price data of RTX 3090 and BTC price could be easily obtained online.