The cost of graphics processing units (GPUs) has risen significantly as a result of the semiconductor shortage caused by the 2020-2021 pandemic. Videocards are increasingly purchased by miners on the secondary market. Used GPUs are 30-50% cheaper than brand new ones. However, there is a chance of getting a faulty gadget that has almost used up all its resources. For this reason, you must learn how to evaluate the mining and performance of a video card. A processor that you buy on your own without first evaluating it can cost you money. The card goes through a thorough testing process that includes verification, document analysis, BIOS firmware analysis, and stress testing using specialized software.