Taipei, July 31, 2003 – Silicon Integrated Systems Corp. (SiS), a world leader in core logic products, today announces the introduction of SiSM661FX, an 800MHz integrated core logic chipset for Notebooks. SiSM661FX is currently one of the most comprehensive integrated chipset for Notebook, supporting the 800MHz Front Side Bus format, DDR400 function and an advanced graphic technology--Ultra-AGPII™ technology. SiSM661FX is expected to usher in the era of 800MHz mobile computing.

"The leading technology and specification design of SiSM661FX is highly in line with the trend of the market," commented Michael Chen, president and CEO of SiS. "SiSM661FX is a flexible, extremely efficient product. In the future, SiS will continue to develop outstanding mobile solution to take Notebook users onto higher grounds."

Built with incomparably advanced formats and architecture, SiSM661FX supports all the Intel Pentium® 4 CPUs, provides a simplified product development process for OEMs and system integrators and perfectly pin compatible with SiS' previous models, largely lowers the developing cost for system builders.

SiSM661FX employs the unique Ultra-AGPII™ technology, which provides lower signal latency and offers greater transmission bandwidth between the built-in graphic engine and memory controller. Moreover, by adopting the intellectual data-processing module and better image quality, SiSM661FX provides excellent operating environment and outstanding display quality for heavy gamers and digital video players. The flexible dual-view application allows the screen to be simultaneously displayed on a CRT, TV or LCD monitor, and supports a maximum resolution of 1600x1200 in the full screen UXGA display. SiSM661FX presents superior added values to add to the overall benefits of the integrated chip set.

SiSM661FX supports the HyperStreaming™ Engine technology, with emphasis on upgrading the overall performance of PC systems. Through all-inclusive hardware management and system resource distribution, it effectively manages CPU, Front Side Bus, south-/north-bridge chips, memory controller, graphic interface and each I/O peripheral, enhancing PC function to the maximum while fully demonstrating the unparallel efficiency of the Intel® platform.

Mass production of SiSM661FX will commence in August 2003. Motherboards adopting the SiSM661FX chipset will be available in the market in September 2003.

About SiSM661FX

SiSM661FX supports the latest 800MHz Front Side Bus clock, proving a 6.4GB/s transferring band -width, stable high-speed computing function and multiple RAM formats such DDR400/333/266. Immerging SiS' Ultra-AGPII™ Technology and the outstanding graphic core, SiSM661FX is able to achieve a VGA Throughput of 3.2GB/s with DDR400, significantly transcending the former 2.1GB/s standard speed provided by AGP 8X. SiSM661FX's superb ECLK and 1600x1200 high resolution can support UXGA TFT-LCD output and perfectly perform high quality images for 3D games.

By Adapting HyperStreamingTM Engine Technology, SiSM661FX and SiS964 speed up the data processing, solve the delay problem under multi-tasking environment, and also completely upgrade the system functions. For more product information, please visit http://www.sis.com/products/chipsets/integrated/pentium4/m661fx.htm

About Ultra-AGPII™ Technology

The Ultra-AGPII™ technology is a high-level graphic mechanism specially developed by SiS for notebooks. It provides faster communication and greater transmission bandwidth between the built-in graphic engine and memory controller of the north-bridge chip. The triggering of DDR400 will boost the VGA Throughput up to 3.2GB/s, a figure that is way above the standard 2.1GB/s of AGP 8X interface. The Ultra-AGPII™ technology provides the powerful efficiency required for 3D games and DVD operating and brings you the best image possible; moreover, it accurately renders the special graphics and light effect of PC games and videos. Ultra-AGPII™ is a core graphic interface indispensable for Notebooks.

About HyperStreaming™ Engine

HyperStreaming™ Engine optimizes the performance of the entire computer system. It not only upgrades the linkage bandwidth between the south and north bridges but also effectively enhances the peripheral equipment to improve the overall performance of the system. The four major functions of the "HyperStreaming™ Engine" structure are capable of identifying each task objects and assigning designated communication channel for each object to ensure co-existence and uninterrupted co-operation. This way, excellent processing capacity through the optimal parallel structure can be provided for the linkage between the CPU and the south-north bridge chipset, and between the south-north bridge chipset and the peripheral equipment, and the CPU-chipset transmission speed can be improved. The overall system operation, as a result, will be more efficient. For more HSE information, please visit http://www.sis.com/hyperstreaming/

HyperStreaming™ Engine Chipsets