In Steam's latest monthly hardware survey, the 32GB RAM configuration accounted for 42.22% of participants, ranking first among all capacities. The shares for 16GB and 8GB were 37.82% and 6.47%, respectively.
This survey uses voluntarily and anonymously provided information from players. The author writing about the survey results stated that it is uncertain to what extent these figures represent all PC gamers; those willing to participate in the survey may also be more attentive to hardware than the average player. Therefore, the 42.22% reflects the configurations of this survey's participants.
Beyond memory, 7.28% of survey participants reported having more than 4TB of available disk space.