The Venator-class Star Destroyer was the Galactic Republic attack cruiser of the Clone Wars era, but there's no reason it couldn't be more than that. Like, say, a spectacular custom case for a gaming PC.
Built from scratch by modder Sander van der Velden -- this is no mere repurposed Star Wars model! -- "YAZI" hides within its massive hull a working computer. He sketched out the vessel before creating a 3D model and then diving into the actual build. For all of the little pieces he couldn't make for hand, he purchased a 3D printer that was up for the task.
You can see much of his process as MSI.com.