BUILDING THE SYSTEM
As always the purpose of this section is not to build a fully working system but rather to showcase what you can expect from the case at hand in terms of interior space.
Just like with many other midi towers you may be able to mount an E-ATX factor mainboard inside the Prominent 5 (unfortunately i don't have one here to test that).
You can install pretty much any CPU Cooler out there inside the new Prominent 5 however pay extra attention to its width since the CNPS9900MAX had roughly 2cm of room left between that and the top 140mm exhaust fan.
The new Prominent 5 has room for cards up to 300mm in length so you should have no issue with an mGPU solution.
There's plenty of space to install even the longest PSU at the bottom of the new Prominent 5 but if you do so you will need to remove one of the plastic cable holders.