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Samsung ships 256Mb, GDDR4 device for testing

Posted: 07 Nov 2005 ?? ?Print Version ?Bookmark and Share

Keywords:samsung electronics? graphics double data rate fourth generation? gddr4? memory?

Samsung's GDDR4 memory device

Samsung Electronics Co. Ltd has shipped a graphics double data rate fourth generation (GDDR4), 256Mb device to major graphics card manufacturers for testing.

The GDDR4 memory device processes gaming and video images at 2.5Gbps or 10GBps, which is equal to transmitting 10 hours of DVD quality video. The fastest graphics memory to this point has been limited to a speed of 1.6Gbps.

As games and video become increasingly high resolution and encompass more content, graphics-DRAM data processing needs to improve at a similar pace. But when data travels between the graphics chip and the resident system, there's typically an inherent transmission delay that has limited the transmission speed.

To reach the 2.5Gbps speed and eliminate transmission delays, the GDDR4 device employs two technologiesData Bus Inversion (DBI) and Multi-Preamble. Collectively, the technologies help produce a transmission speed that is 56% faster than conventional graphics products, the company said.

DBI controls how graphic data is transmitted to the main processing unit. It also induces the data to transform further after it arrives at its intended destination, leading to greater image stability.

Multi-preamble technology enables the GDDR4 to predict precisely when data is exchanged with the main system, allowing simultaneous processing of graphical input and output. As a result, movement from image to image is sharply quickened.

According to Mercury Research, the worldwide graphics DRAM market next year is expected to reach $1.9 billion from $1.5 billion in 2005. Samsung is the market leader with 50 percent market share, based on ISuppli's estimates.

- Ismini Scouras

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