Elpida's 2 Gig DDR2 DIMMS deliver fast performance to server market.Elpida Memory Elpida Memory, Inc. (エルピーダメモリ株式会社 , Inc (Elpida) has announced volume production of its 512 Megabit-based 2 Gigabyte DDR (Double Data Rate) Refers to an SDRAM memory chip that increases performance by doubling the effective data rate of the frontside bus. For more details, see SDRAM. DDR - Double Data Rate Random Access Memory 2 registered dual in-line memory modules (DIMMs). The 2 Gigabyte modules are the highest density available for the server market, and they offer high-speed performance with a data transfer rate of 4.3 Gigabytes per second (PC2-4300). Elpida's newly developed stacked BGA (Ball Grid Array) A popular surface mount chip package that uses a grid of solder balls as its connectors. Available in plastic and ceramic varieties, BGA is noted for its compact size, high lead count and low inductance, which allows lower voltages to be used. (sBGA) technology creates a slim module (4.8 millimeter thickness) that increases air flow space between modules, thus improving thermal performance and reliability for server applications. "Elpida's 2 Gigabyte DDR2 DIMMs combine the industry's highest density modules with the maximum system performance available in the server market," said Jun Kitano, director of Technical Marketing at Elpida Memory (USA). "Our new sBGA stacking technology allows component testing to occur prior to stacking, resulting in improved module production and better yields. Elpida's ability to enhance production capability on high-density, high-performance modules demonstrates our readiness to meet customer demands for DDR2 DIMMs in volume quantities." Elpida's new DIMMs (Part numbers: EBE EBE Excédent Brut d'Exploitation (French accounting) EBE Extraterrestrial Biological Entity EBE Evidence-Based Education EBE Electron Beam Evaporation (semi-conductor industry) EBE e-Business Engineering 21RD4ABHA-xx) are based on Elpida's 512 Megabit DDR2 SDRAM devices that operate up to 533 Megabits per second (unit) megabits per second - (Mbps, Mb/s) Millions of bits per second. A unit of data rate. 1 Mb/s = 1,000,000 bits per second (not 1,048,576). E.g. Ethernet can carry 10 Mbps. (Mbps). The modules are organized as 256M words x 72-bits x 2 ranks, and they contain thirty-six 0.11 micron, 512 Megabit DDR2 devices that are stacked and mounted on the DIMMs using Elpida's unique sBGA stacking technology. The mounted devices have a CAS latency (CL) of 3, 4, 5 with a burst length of 4, 8. The standard 240-pin DIMMs have a JEDEC-compliant outline with a slim thickness of 4.8 mm, and they support Error Checking and Correction (ECC (1) (Error-Correcting Code) A type of memory that corrects errors on the fly. See ECC memory. (2) (Elliptic Curve Cryptography) A public key cryptography method that provides fast decryption and digital signature processing. ) necessary for high-end server applications. The modules also offer 1.8V operation--one-half the power consumption over DDR. The 2 Gigabyte DDR2 registered DIMM (Dual In-Line Memory Module) A printed circuit board that holds memory chips and plugs into a DIMM socket on the motherboard. See memory module. DIMM - Dual In-Line Memory Module is part of Elpida's comprehensive DDR2 product portfolio that also includes 512 Megabyte and 1 Gigabyte densities. |
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