SiSM661FX supports the latest 800MHz Front-Side-Bus clock, Intel® HyperThreading technology, high performance DDR400 RAM, AGP 8X interface, MuTIOL® 1G , HyperStreaming™ technology and 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.

Coupled with SiS964 south bridge chipset, the chipsets provide a transmission bandwidth up to 1G between the north and the south bridges.

The SiSM661FX also employs the unique SiS Mirage™ graphic engine with the exclusive Ultra-AGPII™ technology, which provides lower signal latency and offers greater transmission bandwidth between the built-in graphic engine and the memory controller, which provide 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.