![]() DDR4 SDRAM uses a 288-pin configuration, which also prevents backward compatibility. Difference between Static RAM and Dynamic RAMComputer Memory Computer And IT ApplicationsBBA BBA-TT BCISManagement NotesRAM (Random Access Memory) is the internal memory of the CPU for storing data, program and program result.It is read/write memory which stores data until the machine is working. DDR4 SDRAM improves performance over DDR3 SDRAM through more advanced signal processing (reliability), even greater memory capacity, even lower power consumption (1.2 V), and higher standard clock speeds (up to 1600 Mhz).Although DDR3 SDRAM shares the same number of pins as DDR2 SDRAM (240), all other aspects prevent backward compatibility. DDR3 SDRAM improves performance over DDR2 SDRAM through advanced signal processing (reliability), greater memory capacity, lower power consumption (1.5 V), and higher standard clock speeds (up to 800 Mhz).DDR2 SDRAM runs at a lower voltage (1.8 V) with more pins (240), which prevents backward compatibility. Standard (not overclocked) DDR memory modules top out at 200 MHz, whereas standard DDR2 memory modules top out at 533 MHz. While still double data rate (processing two read and two write instructions per clock cycle), DDR2 SDRAM is faster because it can run at higher clock speeds. DDR2 SDRAM is the evolutionary upgrade to DDR SDRAM.
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