Computer mining rigs are specially designed for only one purpose which is to mine crypto assets efficiently and effectively. Mining takes a lot of time, therefore it is very important to pay attentionto computers for mining. The better the quality of the PC or computer, the faster the mining processwill be. So far, consumers in choosing a mining rig computer only observe the mining rig computerwithout looking at special criteria such as price, motherboard, processor, VGA, power supply andRAM. COPRAS method assessment criteria include price criteria, motherboard, processor, VGA, powersupply and RAM.. The system development method uses a prototype, the system design uses UML andthe system manufacture uses PHP and MySQL. The results of the computer mining rig recommendationscalculated using the COPRAS method are 12 GPUs 381 mh/s with a value of Ui = 1,000, Rig RTX 2060with a value of Ui = 0,8157, Rig 6 x RTX 3060 with a value of Ui = 0,7108