DDR3 SDRAM

Third generation DDR memory leaps greatly forward in data transfer rate and power management. DDR3 provides even higher bandwidth than DDR2 due to the 8-bit prefetch buffer (4-bit prefetch of DDR2, and 2-bit of DDR). The advanced fabrication technology allows lower operating currents and voltages (1.5V, compared to 1.8V of DDR2) and thus enhances thermal performance. Successor to DDR2, DDR3 is considered to replace DDR and DDR2 in coming years. DDR3 memory modules take the form of 240-pin DIMMs, and are not compatible with DDR2 memory slots.

DDR2 SDRAM

Second generation DDR memory provides greater bandwidth and other new features such as On-Chip Termination (OCT). 4 bits of data are moved from the memory array to the I/O buffers (per data line) each core cycle. This can be described as 4-bit prefetch, as opposed to the single-bit fetch in SDRAM and 2-bit prefetch with DDR SDRAM. DDR2 is the dominant mainstream system memory product today, and is replacing DDR in the desktop DRAM market. DDR2 memory modules are 240-pin DIMMs.

DDR SDRAM

Double Data Rate SDRAM: DDR SDRAM sends and receives data twice as often as common SDRAM. This is achieved by transferring data on both the rising edge and the falling edge of a clock cycle. DDR memory is being phased out and replaced by DDR2 memory. DDR memory modules usually take the form of 184-pin DIMMs.

RDRAM

Rambus Dynamic Random Access Memory: This is a type of synchronous DRAM created by the Rambus Corporation. RDRAM features an architecture designed to achieve high bandwidth, it is used in the Sony PlayStation 2, early Pentium 4 desktop systems and other applications. The XDR DRAM, RDRAM's successor, is used in IBM's Cell processor and Sony PlayStation 3. RDRAM is also mainly used for capacity expansion of old desktop systems and often come in the form of 184-pin RIMMs/Rambus Inline Memory Modules (16bit). 

SDRAM

Synchronous Dynamic Random Access Memory: SDRAM has a synchronous interface. It waits for a clock pulse before transferring data and is therefore synchronous with the computer system bus and processor. This greatly improves performance over asynchronous DRAM. SDRAM is not as popular as it once was and may be used during upgrades. SDRAM modules usually come in the form of 168-pin DIMMs.

Information Technology

Information Technology

Overview:
We are living in the information age of a Global Village today. that means information is the key factor in this era and it is rightly said that "Information is the most precious commodity of today's day-to-day business". Everything Evolves around it whether it is education, medicine, history, geographical phenomena, Sports, Research or Business. You name the system and information is there to play a key role in its functionality and existence.

Information can be defined as the facts & Figures about anything i.e. the know-how about any object that exists and plays its role in any system. the system is any identified & known work that Accepts data/information into itself, manipulates in the shape of certain output(s) and delivers so that is become useful & meaningful. and precisely, that is what is known as "data processing" or "Computing" for which we need a computer to accomplish the task.

Dynamic RAM (DRAM) Memory Technologies

Different Kinds of DRAM's & Its Band Width

Dynamic RAM (DRAM) Memory Technologies