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RDRAM Memory


Direct Rambus DRAM or DRDRAM (sometimes just called Rambus DRAM or RDRAM) is a type of synchronous dynamic RAM.
PC-800 RDRAM, which operated at 400 MHz and delivered 1600 MB/s of bandwidth over a 16-bit bus. It was packaged as a 184-pin RIMM (Rambus in-line memory module) form factor, similar to a DIMM (dual in-line memory module). Data is transferred on both the rising and falling edges of the clock signal, a technique known as double data rate.  For marketing reasons the physical clock rate was multiplied by two (because of the DDR operation); therefore, the 400 MHz Rambus standard was named PC-800.  
Moreover, if a mainboard has a dual- or quad-channel memory subsystem, all of the memory channels must be upgraded simultaneously.  16-bit modules provide one channel of memory, while 32-bit modules provide two channels. Therefore, a dual channel mainboard accepting 16-bit modules must have RIMMs added or removed in pairs.   A dual channel mainboard accepting 32-bit modules can have single RIMMs added or removed as well.

PC800-45ns 184-pin nonECC Rambus RDRAM RIMM:
(PC800-45ns 184pin nonECC Rambus RDRAM Memory)
256MB 184-pin NON-ECC PC800-45 RDRAM RAMBUS (p/n RND-8Q-45)
PC800-45ns 184-pin ECC Rambus RDRAM RIMM:
(PC800-45ns 184pin ECC Rambus RDRAM Memory)
256MB 184-pin ECC PC800-45 RDRAM RAMBUS (p/n RED-8Q-45)
PC800-40ns 184-pin nonECC Rambus RDRAM RIMM:
(PC800-40ns 184pin nonECC Rambus RDRAM Memory)
256MB 184-pin NON-ECC PC800-40 RDRAM RAMBUS (p/n RND-8Q-40)
PC800-40ns 184-pin ECC Rambus RDRAM RIMM:
(PC800-40ns 184pin ECC Rambus RDRAM Memory)
256MB 184-pin ECC PC800-40 RDRAM RAMBUS (p/n RED-8Q-40)
PC1066 184-pin nonECC Rambus RDRAM RIMM:
(PC1066 184pin Non ECC Rambus RDRAM Memory)
256MB 184-pin NON-ECC PC1066 RDRAM RAMBUS (p/n RND-8R)
PC1066 184-pin ECC Rambus RDRAM RIMM:
(PC1066 184pin ECC Rambus RDRAM Memory)
256MB 184-pin ECC PC1066 RDRAM RAMBUS (p/n RED-8R)

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