Complex sentence: It doubles the total amount of RAMBUS RDRAM in the Nintendo 64 from 4 MB to 8 MB. By increasing system memory, there is potential for greater screen resolution, more detailed graphics, and higher frame rate.
Split into simpler sentences: It doubles the total amount of RAMBUS RDRAM in the Nintendo 64 from 4MB to 8MB. This allows for greater screen resolution, more detailed graphics, and a higher frame rate.