What's in HP's $4,363 virtual reality desktop?

If you thought virtual reality headsets were expensive, the price of desktops designed to create VR content will blow you away.
HP's new Z Workstations, announced on Tuesday, start at US $4,363, and that doesn't include a VR headset. The desktops can also be used for movie-making, engineering tasks, and other resource-heavy applications.
The desktops can be used to create content for HTC's Vive headset. HP's line of Z Workstations have been used to make movies like "Deadpool," but creating virt