Short answer: no
Long answer: definitely not. The motherboard is too old to support any modern graphics cards. It has AGP, which is pretty old, and you could not put a modern GPU in the PCI slots. Also, please do not keep the PSU, I do not want you to hurt yourself or any of your components. If you want to upgrade and old PC, I'd recommend buying a cheap Dell Optiplex off eBay for like $30.