Intel's NUC systems have been around for many years and are known for their compact build. The new Intel NUC 9 Extreme even offers enough room for a full-fledged desktop GPU. While this increases the device's size noticeably it still remains fairly compact. Find out in our extensive review how much performance you can expect.
https://www.notebookcheck.net/Intel-NUC-9-Extreme-with-Core-i9-and-RTX-2070-in-Review.469594.0.html
Yeah...seems better to just build on an ITX platform.
1.3 gallons, seriously? I thought even US outlets use liters when referring to case sizes. And which gallon is that? Is that a British gallon (imperial), or US customary dry gallon? Or US customary wet gallon? Or some other gallon?