1.5 GB for the program itself, plus at least 2 GB of scratch space for calculations. Installation Guide

Because Gaussian 16 is proprietary, the "download" process involves purchasing or registering for a license.

Once purchased, the software is typically provided via a secure download link or physical media (DVD), accompanied by a unique serial number required for installation. System Requirements for Windows

64-bit Windows 7, 8, 8.1, 10, or 11; Windows Server 2012 R2 or 2019. Processor: AMD64 or Intel64 (EM64T) architecture. Memory (RAM): Greater than 2 GB.

Before installing, ensure your hardware meets the following official minimum requirements :

Pricing varies by region and user type. For example, a single computer academic license for Windows may cost around $750 in the US , while commercial licenses are significantly higher.

Licenses can be bought directly from the official pricing page or through authorized global distributors.

Select the components to install (the default full installation is recommended).