If you are using a Virtual Machine (VM), keep these specs in mind for the "authentic" feel: 32MB to 64MB (NT 4.0 will fly on this).
For many IT professionals, Windows NT 4.0 represents a golden era of enterprise computing. Simulators allow users to relive the interface of NT 4.0 Workstation, complete with the classic 3D screensavers (3D FlowerBox, 3D Flying Objects) and the original Solitaire game. windows nt 40 simulator hot