![]() DDR3-SDRAM – Double Data Rate Three (3) Synchronous Dynamic Random Access Memory DDR2 SDRAM memory is not compatible with current DDR SDRAM memory slots. DDR2 transfers 64 bits of data twice every clock cycle. DDR2 SDRAM offers new features and functions that enable higher clock and data rate operations. DDR2 SDRAM Double Data Rate Two (2) Synchronous Dynamic Random Access MemoryĭDR2 SDRAM is the next step up from DDR SDRAM. DDR-SDRAM (and subsequent DD2 and DD3) as well as RDRAM are the technologies which are replacing SDRAM. DDR-SDRAM also consumes less power, which makes it well-suited to notebook computers. Short for Double Data Rate-Synchronous DRAM, a type of SDRAM that supports data transfers on both edges of each clock cycle (the rising and falling edges), effectively doubling the memory chip’s data throughput. (example: The PC100 SDRAM is designed for systems equipped with a 100 MHz front side bus.) DDR SDRAM – Double Data Rate Synchronous Dynamic Random Access Memory When looking at SDRAM The number following “PC” indicates the speed of the system’s front side bus. SDRAM, until recently, was the memory standard for modern PCs. Short for Synchronous DRAM, this is a type of DRAM that synchronizes itself with the CPU’s bus. DIMMs are standard in desktop computers, and common types of DIMMs include the following SDRAM – Synchronous Dynamic Random Access Memory The most commonly used types today are DIMMs (Dual In-Line Memory Module) and these are the small circuit boards that holds memory chips. There are a large number of RAM types available for desktop computer systems. Again, the motherboard manufacturer will offer information on memory size, and you will also need to find out how much memory is required, at the very minimum, for the operating system you are using. Another issue you will need to consider is how much memory you will need. This information is readily available in your motherboard manual, or online at the motherboard manufacturer’s Web site. ![]() Upgrading Memory Where to Startīefore you can upgrade your system memory, you have to first find out what type of memory is supported by your motherboard. All data on the computer is stored on the hard drive, but in order for the CPU to work with the data during normal operations, the data the computer uses and works with is read into the working memory, which is the RAM chips. RAM is the “working memory” storage area within the computer. ![]() That is, any byte of memory can be accessed without touching the preceding bytes. System memory, frequently called main memory or RAM (Random Access Memory), is a type of computer memory that can be accessed randomly. ![]()
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