I got an Nvidia Geforce GTX 1660 video card, a new SSD, and Windows 10 (previously had 8.1). It took a while to get everything to work properly as the computer repair guys had geniously forgotten to install a driver, but now that everything's set, things run 10x as smooth as on my previous set-up. I'll replace my motherboard and case somewhere next year and it'll practically be a brand-new computer.