I purchased a system from Magic Micro: AMD 3900X PC w/ 256gb NVME, 1TB HDD, Radeon 580 8GB video card and 32gb 3200mzh Ram. The system works perfectly! The case I selected permits easy upgrading, and the service department was always helpful! When time comes for another PC purchase, I'll be going with Magic Micro again! They really do help you out tremendously!