The CAD case was my default guess, though I've seen from my ME colleagues that when you're designing something very complex you absolutely need the oomph of a r

The CAD case was my default guess, though I've seen from my ME colleagues that when you're designing something very complex you absolutely need the oomph of a real workstation class machine. I guess there could be a large "middle" of quite complex but not extremely so. But how many people need that? I was shocked to see another colleague doing CFD on his ipad.