Memory

Some types of memory:

• EDO RAM

• SDRAM (Synchronous Dynamicc RAM)

First released, SDRAM is still struggling in the working frequency of 66 MHz, then grew to 100 MHz and 133 MHz final. Width The transferred data bandwidth range from ± 800 Mb / s (PC 100). Now for capacity ranging from 16 to 512 Mb with the number of pins = 168. Figure 2. 16. Memory SDRAM

• DDR SDRAM (Double Date Rate SDRAM)

A DDR SDRAM module consists of 184 pins which have a data point 64 bits. Physically DDR has only one hole on the pin. So that distinguishes it from SDRAM. All kinds of good DDR PC 1600, 2100, 2700, 3200 have the same number of pins. Excess DDR is to have technology that can improve data throughput Memory 2 x faster than SDRAM, because work on the buses 200 and 266 MHz. Figures for 1600/2100 on DDR PC obtained from the calculation as follows:

Shared memory bus width of 8 bits multiplied by the data rate. For example, the bus width184 pin DDR memory module is 64 bits, Date rate of approximately 266 DDR MHz, then this data to produce peak data bandwidth = 64 / 8 x 266 MHz = 2128 = 2100 MHz

 

 

 

Memory DDR SDRAM

 

• RDRAM (Rambus Double RAM) 

Rambus is a type of special memory for Intel P4. Rambus Names taken from the manufacturers, namely Rambus Inc. Type RDRAM using a slot RIMM (Rambus In line Memory Module) to be fully charged. To solve this problem normally use this module - dummy module that functions complement those RDRAM slots. Type RDRAM is PC 600, PC 700, PC 800, respectively - each working on buses 600, 700 and 800 MHz. Memory type is the most expensive than others.

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SODIMM usually found on a laptop computer