specified at 5 to 50 mib/s, nintendo cited the rom cartridges' very fast load times in comparison to disc-based games. few contemporary cd-rom drives have speeds above 4×, and the competing consoles sega saturn and sony playstation have 2× drives running at about with high latency. this can be observed on the loading screens that appear in many playstation games but are typically nonexistent in nintendo 64 games. rom cartridges are so much faster than contemporary cd-rom drives that data can be streamed in real-time from cartridges as if they are additional ram, thus maximizing the efficiency of the system's ram. this was a common practice for developers in many games, such as nintendo ead's "super mario 64" or factor 5's "indiana jones and the infernal machine". howard lincoln said, "[genyo takeda, the nintendo engineer working with silicon graphics to design project reality] and those guys felt very strongly that it was absolutely essential to have it on a cartridge in order to do the kind of things that we wanted to do with "super mario"."