I just built a Mini-ITX travel rig for under $500 if you don't include the video card that could handle it. Ryzen 5800X, 64GB DDR-3200 ram, 2TB NVMe, fans, mini-itx case with carrying handle. Only things I had already was a 750watt Suprnova G2 power supply and a 3070 RTX. Ex-Girlfriends step-daughter wanted to still be able to play Guild Wars and Final Fantasy when staying at her moms.