[numpad0]

DisplayLink creates virtual displays on CPU and stream compressed feed over USB. That takes non-negligible amount of CPU time and RAM bandwidth, and it makes sense to give it a max concurrent stream count(set aside which of 4 or 6 are more reasonable).

[parl_match]

While true, modern implementations use hardware blocks for acceleration AND for just terminals, with spare displays, you'll likely be using lower resolutions at lower refresh rates.

We've used a series of n150 based mini PCs (priced at $200 each) to power three dashboard displays at the same time. I guess it's a matter of calculating power usage and figuring out how that translates over 4 years