ZBrush 2.0

Recommended System Requirements
OS: Windows 2000 or newer (x64 users, please contact support@pixologic.com for details)
CPU: Fast PIII or newer (or equivalent such as AMD) with optional multithreading or hyperthreading capabilities
RAM: 512MB (1024MB for working with multi-million-poly meshes)
Monitor: 1280x1024 monitor resolution (32 bits)

Minimum System Requirements
OS: Windows 98 Second Edition
CPU: PII with MMX, 200MHz
RAM: 256MB (512MB recommended)**
Monitor: 1024x768 monitor resolution (32 bits)