Elpida 4GB DDR2 RDIMM s Elpida 4GB DDR2 Registered DIMM

Elpida today announced the availability of 4 Gigabyte DDR2 Registered DIMMs that offer high-density and
high-performance benefits for server applications. Elpida’s new modules can
deliver up to 32 Gigabytes of memory in an eight slot server platform, with
system data transfer rates up to 8.4 GB/sec. They also
utilize Elpida’s unique stacked FBGA (sFBGA) technology to achieve a thinner
module-about 30 percent thinner than the current JEDEC standard. The module
thinness helps increase air flow between DIMMs and improves thermal performance
in server systems. Elpida’s 4 Gigabyte DDR2 Registered DIMMs are currently sampling to customers. Volume production is
expected in July 2005.

Elpida 4GB DDR2 RDIMM Elpida 4GB DDR2 Registered DIMM

Elpida Memory, Inc. (Elpida), Japan’s leading global supplier of Dynamic
Random Access Memory (DRAM), today announced the availability of 4 Gigabyte DDR2
Registered Dual In-Line Memory Modules (DIMMs) that offer high-density and
high-performance benefits for server applications. Elpida’s new modules can
deliver up to 32 Gigabytes of memory in an eight slot server platform, with
system data transfer rates up to 8.4 Gigabytes per second (GB/sec). They also
utilize Elpida’s unique stacked FBGA (sFBGA) technology to achieve a thinner
module-about 30 percent thinner than the current JEDEC standard. The module
thinness helps increase air flow between DIMMs and improves thermal performance
in server systems.

"4 Gigabyte DDR2 Registered DIMMs provide the highest density available for high
volume and server blade applications," said Jun Kitano, director of Technical
Marketing for Elpida Memory (USA). "By utilizing sFBGA technology to create a
thinner module, Elpida can offer a competitive module solution that also
addresses industry demand for improved air flow and thermal characteristics in
servers."

Elpida’s 4 Gigabyte DDR2 Registered DIMM – Technical Details

Elpida’s 4 Gigabyte DDR2 Registered DIMMs (Part numbers: EBE41RE4AAHA-5C-E,
EBE41RE4AAHA-4A-E) are organized and 512M words x 72-bits x 2 Ranks. The modules
are composed of thirty-six pieces of 1 Gigabit DDR2 SDRAM devices stacked using
sFBGA technology in 240-pin packages. The stacked packages actually improve
module yield because they are based on devices that have already been tested.
The unique electrical characteristics of Elpida’s package include enough
headroom to support higher frequencies for modules based on future generation
DDR2 devices. The current generation DDR2 devices mounted on the DIMMs each have
a CAS latency (CL) of 3-4-5, a burst length of 4 or 8 and 1.8 Volt operation
with a data transfer rate of up to 533 Megabits per second (Mbps). This
translates to a module data transfer rate of 4.2 GB/sec per channel, or 8.4
GB/sec per system.

Availability

Elpida’s 4 Gigabyte DDR2 Registered DIMMs (Part numbers: EBE41RE4AAHA-5C-E,
EBE41RE4AAHA-4A-E) are currently sampling to customers. Volume production is
expected in July 2005.