Sample Configuration
Each SGRAM can hold 256K Pixels
- 1280/256 => 5 SGRAM chips
- Assume no double buffering
Assume Refresh Rate = 72 Hz (13.9 ms)
- Each chip accessed 13.9/5 = 2.8ms (1/5 or 20% of my bandwidth is used for screen refresh).
- 80% * 83 Mhz => 66 Mhz bandwidth!!!
- Previous generation DRAMs had only 20 Mhz bandwidth