Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pumping, when referring to computer systems, is simply how many times per clock cycle data is being transmitted. Early types of system memory (RAM), such as SDRAM, transmitted data on only the peaks of the cycles. With the advent of double data rate synchronous dynamic RAM or DDR S ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pumping, when referring to computer systems, is simply how many times per clock cycle data is being transmitted. Early types of system memory (RAM), such as SDRAM, transmitted data on only the peaks of the cycles. With the advent of double data rate synchronous dynamic RAM or DDR SDRAM, the data was transmitted on both the peak and the trough of the cycle. However, quad-pumping has been used for a while for the front side bus (FSB) of a computer system. This works by transmitting data at the peak, trough, and zeroes of each cycle. Intel computer systems (and others) use this technology to reach effective FSB speeds of 1600 MHz, even though the true FSB speed is only 400 MHz. A multiplier in the CPU then multiplies the true FSB speed by a factor in order to get the CPU speed.