So you are looking for a compact wearable desktop computer for your VR needs? The OMEN X Compact Desktop w/ VR Backpack is worth a look. It comes with a HK-series processor, PCIe SSD, DDR4 RAM, and all the ports you need for gaming.
You can not only wear this compact machine but also get to dock it when you are done gaming. The machine can be powered by battery for untethered experience.