Double Data Rate DDR Definition - Double data rate (DDR) is the advanced version of synchronous dynamic random access memory (SDRAM). SDRAM waits for... Double Data Rate DDR Definition - Double data rate (DDR) is the advanced version of synchronous dynamic random access memory (SDRAM).
However, your system will operate at the speed of the slowest memory module. One thing to keep in mind is that the memory does need to be the same type - for example, SDRAM cannot be mixed with DDR, and DDR cannot be mixed with DDR2 and DDR2 cannot work in a DDR3 system.
The Rambus inline memory module connected to an RDRAM motherboard using a 184-pin connector versus the 168-pin connector of the dual inline memory module used by SDRAM. In 1999, Direct Rambus DRAM was released, which provided a 16-bit bus, rather than SDRAM's initial 8-bit bus.
SDRAM (synchronous DRAM) is a generic name for various kinds of dynamic random access memory (DRAM) that are synchronized with the clock speed that the microprocessor is optimized for. This tends to increase the number of instructions that the processor can perform in a given time.