Double Date Rate SDRAM is today's standard for high-performance servers, desktops and portable PCs. SAMSUNG has led the industry with cutting-edge SDRAM, being the first to introduce DDR in 1997, DDR2 in 2001 and DDR3 in 2005. Based on the JEDEC standard, SAMSUNG's high-performance main memory solutions take advantage of the company's leadership in engineering and advanced semiconductor process technology.

Fully Buffered and Registered DIMMs Support Maximum Bandwidth and Fast Data Access

DDR2 features optimize server performance
The need for increased server performance is unrelenting, thus DDR2 SDRAM has taken its place as the high-density standard for server main memory. Its advanced architecture gives DDR2 a host of advantages over earlier standards, such as faster speeds, better signal integrity, lower power consumption and better thermal characteristics.

FB DIMMs for maximum density
In addition to DDR2 registered DIMMs for servers, SAMSUNG is offering Fully Buffered DIMMs (FBDIMMs) so servers can benefit from the highest possible memory density and bandwidth. Servers equipped with FBDIMMs can get up to 16 gigabytes per channel of total system memory. This advanced server memory architecture buffers the DRAM data pins from the channel and uses point-to-point links to eliminate the need for a stub bus. The buffers and repeaters help reduce the motherboard routing area. This architecture requires one-third fewer pins than registered DIMMs and also delivers excellent throughput and low latency. The FBDIMM architecture increases the memory channels to provide up to 21.2GB/ second of memory bandwidth.

powerful new RAS features
With system reliability so essential in servers as they take on an ever-greater workload, the FB DIMM architecture helps deliver exceptional reliability. Most notable is a silent data error rate of one per 100 years or less, enabled by a robust CRC scheme that protects both commands and data. Also boosting reliability are features such as transient bit-error detection and retry and “bit-lane fail-over correction.” This enables the server board to shut down a bad data path on the fly. Optional bit widths and CRC coverage will be applicable to a wide range of server applications.

world's highest-capacity server memory
SAMSUNG's most dense FB DIMM offering is an 8GB memory module that is the world's highestcapacity server memory solution. The module includes 32 2Gb stacked devices based on new technology, plus an Advanced Memory Buffer (AMB) that allows the memory modules to be daisy chained together across a two-way, point-to-point serial bus. The AMB also increases the data transfer speed between memory and CPUs, directly communicating with a memory controller chip. Whether for single- or dual-core processors or as add-on memory, SAMSUNG's large portfolio of the fully validated DDR2 products meets any needs for advanced server memory.

High-bandwidth DRAM Delivers Greater Speed, Uses Less Power

advanced PCs and workstations depend on DDR2 SDRAM
DDR2 is today's high-bandwidth memory standard, supporting the threaded applications, improved graphics and multitasking found on the most advanced PCs and workstations. Compared to previous memory solutions, this JEDEC memory standard also has better signal integrity, lower power consumption, and better thermal characteristics. In addition, the improved speed and density of DDR2 memory is ideal for the dualcore systems that are growing in popularity, where this horsepower can be used for demanding tasks like multiprocessing and manipulating large video or image files.
Advanced memory modules from SAMSUNG are built using cutting-edge manufacturing, with SAMSUNG the first to mass produce 1Gb DDR2 on 60nm-class process technology, which increases production efficiency by 40% over 80nm processes. Besides having high density, SAMSUNG DDR2 also has high frequency, which is enabled by the company's FBGA packaging technology. SAMSUNG delivers fully validated parts and has the infrastructure in place to help system designers take advantage of today's fastest memory solutions.
As the PC industry transitions to Windows Vista - with minimum DRAM requirements of 1GB - SAMSUNG's broad, high-volume line of DDR2 solutions will enable PCs to get the most from this new operating system. Special Features SAMSUNG DDR2 DIMMs adhere to JEDEC's DDR2 specifications by adding core functions that include: off-chip-driver calibration to maintain optimal driver strength; on-die termination for maximum signal integrity; and posted CAS, a command control method to enhance bus efficiency. SAMSUNG's DDR2 DIMMs feature a 4-bit pre-fetch scheme that delivers twice the external bandwidth of DDR memory for the same internal frequency. As a result, advanced desktops can support better media playback and 3D graphics performance.

DDR2 speed migration

Power, Performance and Improved Battery Life for Notebooks and Portables

low power and high speed for notebook PCs
DDR2 SDRAM SODIMMs from SAMSUNG deliver significant benefits to portable PC makers.These include a space-saving form factor, low power consumption, improved thermal characteristics, and high bandwidth. Resulting in greater performance per watt and improved battery life compared to other memory standards, SAMSUNG DDR2 SODIMMs are available in densities from 256MB to 2GB and feature speeds up to 800Mb/second.

broadest selection of DDR2
SAMSUNG DDR2 modules for portable PCs are part of the industry's broadest selection of DDR2 SDRAM solutions that include high-performance memory for today's most advanced mobile, desktop and server systems.
SAMSUNG's DDR2 SODIMMs are based on the company's monolithic component technology and manufactured using its exacting process technology, which currently goes down to 60nm. FBGA packaging technology enables high frequency.

advanced features
SAMSUNG DDR2 SODIMMs adhere to JEDEC's DDR2 specifications by adding core functions that include: off-chip-driver calibration to maintain optimal driver strength; on-die termination for maximum signal integrity; and posted CAS, a command control method to enhance bus efficiency. SAMSUNG's DDR2 SODIMMs feature a 4-bit pre-fetch scheme that delivers more than twice the external bandwidth of DDR memory for the same internal frequency.

lower voltage improved battery life
SAMSUNG's DDR2 modules for portable computers require up to 65% less voltage than DDR400, thus improving battery life. In one test, a notebook PC equipped with SAMSUNG DDR2 memory lasted close to 10% longer before requiring recharging. With portable PCs in broad use among corporate users, the extended battery life can improve mobility and thus productivity. In addition, the increased performance per watt of SAMSUNG DDR2 SODIMMs better supports high-end capabilities in the latest portables. In fact, DDR2 is an important element for the latest chipsets and processors aimed at the portable PC market.

vista notebooks need more memory
The many advantages of DDR2 for portables are particularly evident when it comes to the Windows Vista operating system, which relies on advanced memory technology to make the computing experience more informative, intuitive and helpful. For example, new breakthrough features like SuperFetch work with the memory subsystem to give PCs powerful memory optimization capabilities to boost system responsiveness. In addition, Vista supports optional new memory hardware developed specifically for notebooks and portables.