This is an illustrative scenario, not an account of a specific client engagement. Consider a mid-size architecture practice in Abuja: a team of eight, losing a large share of every week waiting on renders. Projects slip. Clients get impatient. The bottleneck is not talent — it is hardware.
Take a typical ageing setup: Intel Core i5-9400F machines with 16GB RAM and GTX 1660 graphics cards. Capable when purchased, but increasingly inadequate as project complexity grows. A single high-quality Lumion 12 scene can tie up the lead architect's machine for hours.
The Assessment
The right starting point is the practice's actual project files, not a conversation about specs. In a case like this the key bottlenecks are:
- GPU-limited real-time viewport performance in Lumion (causing constant lag during design review)
- CPU-limited final render output (Lumion uses CPU for some passes, GPU for others)
- RAM-limited BIM file handling in Revit — multiple linked models cause crashes at 16GB
What the Build Needs
A build for this case is driven by the actual software load, not a generic "workstation" spec:
- Intel Core i7-14700K (high single-threaded performance for Revit viewport)
- 64GB DDR5-6000 RAM (Revit headroom, no more crashes on large linked models)
- NVIDIA RTX 4070 Ti Super 16GB (Lumion real-time performance, enough VRAM for complex scenes)
- 2TB NVMe PCIe 4.0 primary + 4TB secondary (project file storage local to each machine)
- 850W 80+ Platinum PSU, 360mm AIO cooling
What Changes
Moving from a GTX 1660 to a 16GB RTX 4070 Ti Super removes the viewport lag that makes design review painful, and cuts Lumion render times substantially. Going from 16GB to 64GB is what stops Revit crashing on multiple linked models — that is a capability change, not a speed change.
For a practice billing by the hour, render wait time is the number worth tracking. It is the metric that decides whether hardware like this pays for itself, and it is worth measuring against your own project files before and after.