SketchUp spins large models smoothly only when the graphics and processor can keep up, so an entry 24-inch all-in-one will feel limited on bigger scenes. The compact answer that actually copes is the GEEKOM A8 Max at R12,900, whose Ryzen 9 and 32GB drive detailed models and rendering previews without the lag. Dense models spin smoothly only when the graphics and processor keep pace, which an entry unit struggles to do.
Choosing a machine that models well
The HP All-in-One 22 at R10,036 is a lovely tidy unit for admin and light 3D sketches, but its i3-N300 and 8GB will crawl once a model grows dense with components. Keep it for concept work, not full builds.
A better modelling route is the Minisforum UM750L at R4,600 with 16GB, paired with a large monitor you pick for the workspace, giving you a sharper canvas and the memory SketchUp likes.
The local case for a design PC
A designer's deadlines do not pause for a repair, so buying here with warranty in Rand and courier delivery keeps a fault local and quickly resolved. For a machine your projects live on, that support protects your schedule. Handling any repair in-country keeps a designer's calendar intact rather than at the mercy of a slow return.
Modelling in SketchUp? > Let Evetech spec a PC that handles your scenes.