ウェブBecause of more complex interface circuitry and increased number of memory banks, RDRAM die size was larger than that of contemporary SDRAM chips, resulting in a 10–20% price premium at 16 Mbit densities (adding about a 5% penalty at 64 Mbit). [2] Note that the most common RDRAM densities are 128 Mbit and 256 Mbit.