DIFFERENT TYPES OF RAM: SDRAM, DDR1, DDR2, DDR3, & SODIMM

SDRAM (Synchronous Dynamic Random Access Memory) RAM has the capability of this type at the top of EDO-RAM. SD memory slot for RAM is 168 pins. SD is a form of RAM Dual Inline Memory Module (DIMM). Has a speed above 100 MHz. Usually still widely used for Computer Pentium 2 and Pentium 3 and Pentium 4 computers are the first generation that still uses this type of RAM Sample images SDRAM:

Doule Data Rate (DDR) RAM (often called DDR1), with 64 bits of data transfers, DDR SDRAM 184 pin DIMM uses. DDR SDRAM gives a transfer rate of: memory bus clock rate x 2 x 64 / 8. If the bus frequency 100 MHz, meaning the maximum data transfer rate is (100x2x64) / 8, which is 1600 MB per second. Pentium 4 motherboard is intended for second and subsequent generations. Sample Image RAM DDR1:

DDR 2 RAM, is a continuation of DDR SDRAM technology. Was first introduced in the second quarter of 2003, then in late 2004 began to replace the standard DDR2 DDR1. Unlike DDR SDRAM, DDR2 uses 240 pins DIMM, and is not compatible with DDR SDRAM that uses 184 pins.

DDR3 RAM, is the continued development of DDR2 memory, where the main benefit of DDR3 is having the ability to transfer data twice as fast as the DDR2. DDR3 consumes 30% more efficient than DDR2, only 1.5 V (1.8V DDR2, DDR1 2.5 V). 1.5 V power supply, works well with 90 nanometer technology. sample image RAM DDR3: