How much RAM do the arm builders have?

Hi list, first of all thank you to Nicolas, Sergio and others for setting up the new infra! Keep up the good work guys! May I ask how much memory do the arm build servers have available? My qmc2 and mame builds have both failed due to memory exhaustion. While I am in the process of moving them to Fedora proper, this issue might end up affecting other packages as well. Both qmc2 and mame built fine on i686 and on x86_64 so this could be used as an indication of how much memory is sufficient. Thank you for the information in advance. Best regards, Julian