Why can’t I allocate more than 1 GB of RAM to Geneious Prime? June 16, 2020 21:44 On 32-bit operating systems the maximum amount of RAM you can allocate is 1 GB. You will need to upgrade to a 64-bit operating system and install the 64-bit version of Geneious to allocate more. Related articles How do I allocate more RAM to Geneious Prime? I allocated all my RAM to Geneious Prime, why is my computer so slow? Why does Geneious Prime appear to be using lots of memory when I’m not running any analyses? Why does Geneious Prime appear to not be using any memory when I’m running a large phylogenetic analysis? How can I see how much memory Geneious Prime is using?