Aspen HYSYS relies on SQL Server (Express edition is usually bundled with the installer) to manage property packages, components, and internal cost estimation databases.
Aspen HYSYS is a high-performance process simulation tool that requires significant computational resources to handle complex thermodynamic calculations and large-scale plant models. As of early 2026, the current standard for industrial deployments is , though many organizations still utilize V12 or V15 (which shares similar architectural requirements). Core Hardware Requirements Aspen Hysys System Requirements
32 GB RAM (Essential for handling large-scale refinery models or running multiple instances of HYSYS simultaneously). Aspen HYSYS relies on SQL Server (Express edition