The computing resources were greatly expanded in 1975 when an IBM System/370 model 165 was installed. This machine was about four times faster than the 360-65, had more than twice the memory and more and faster disks. The 370-165 ran VM/370 with most work being done in batch under OS/MVT running in a virtual machine. During the 1980s the IBM system was upgraded several times and Prime systems were added for student use.