Ultra portable build suggestions

[Swapnil]

tl;dr: need to build a PC that would be portable enough to be carried in a backpack in Dhaka city's public transportation, and would be able to run latest versions of Autodesk Revit and AutoCAD MEP as good as my i5 2500k + GTX 550Ti desktop. And I need to do it in a budget.

Revit and AutoCAD are mainly single threaded and runs at 93% performance on an i3 compared to an i7 of a similar clock speed (source: Puget systems). So getting an 8th gen i3, or maybe even a pentium would be a good idea, but then I would need a graphics card because the viewports lag like hell with Intel integrated graphics, but works without any hiccup on my 550Ti. So I was thinking a similar performance new gen gpu with lower power consumption, like a 1030 should be good enough.

But now I'm hearing the new Ryzen APUs can give similar performance as an 8th gen i3 + GTX 1030 in a single package. If it's true then it would probably be a good fit here and it would save both money and space. But I have no idea on what motherboard, psu and ram to go with for a small form factor build. And I don't know if any small mini itx case is available in BD either. So any suggestion regarding this matter would be appreciated.

Also feel free to discuss anything related to small form factor or mini itx builds in general.

[Iskander]

CM Elite 110 & 130 are the only Case I can think right now for best portability

[Swapnil]

I'm currently looking at this for the case: https://ryanscomputers.com/component...-product-view4

It's only 3 inches thick, compared to Cm Elite's 8 inches. But I wonder if it's too small to fit even the AMD's Wraith Stealth cooler.