Aspen Hysys System Requirements -

| Component | Minimum (Small models) | Recommended (Large dynamic models) | | :--- | :--- | :--- | | Processor (CPU) | 2.0+ GHz, 4 cores (Intel i5 or AMD Ryzen 5) | 3.5+ GHz, 8+ cores (Intel i7/i9 or AMD Ryzen 7/9) | | RAM | 8 GB | 16–32 GB (64 GB for massive refinery flowsheets) | | Storage (SSD) | 20 GB free space | 50+ GB free space (NVMe SSD strongly preferred) | | Screen Resolution | 1920 x 1080 | 2560 x 1440 or dual monitors |

HYSYS uses FlexNet licensing. You have two options:

Network failures due to VPN drops or WiFi interference will cause HYSYS to freeze and prompt "License lost – save your work." Always use a physical Ethernet cable on critical simulations. Configure your firewall not to block Aspen License Manager (LMGRD.exe). Aspen Hysys System Requirements

WiFi is acceptable for occasional use but not for 8-hour dynamic runs.

Before purchasing a new workstation or laptop, perform these checks with the trial version of HYSYS (if available through your university or company portal): | Component | Minimum (Small models) | Recommended

Benchmark reference: On an i7-12700K / 32GB DDR4, the “Crude_Distillation.hsc” sample should solve in under 3 seconds fully converged.

Date: April 11, 2026
Subject: Hardware and Software prerequisites for Aspen HYSYS installation and performance. Network failures due to VPN drops or WiFi

Despite efforts with wine or virtualization, Aspen HYSYS does not run natively on macOS or Linux. You must use:

Critical Note: AspenTech typically supports the current Windows version and two prior versions. As of 2025, Windows 8.1 is completely obsolete. Avoid using Windows 11 24H2 until AspenTech releases a certified patch, as major updates often break license managers.