Silicon Integrated Systems today ignited the continuance of the company’s policy in regards of the so-called “pseudo-new” core-logic products by announcing the SiS655TX chipset. The newcomer is based on SiS dual-channel 655 micro-architecture rolled out a year ago and brings almost nothing new compared to SiS655FX product.

The new SiS655TX core-logic inherited 800MHz Quad Pumped Bus as well as dual-channel PC2100, PC2700 and PC3200 memory support. Following the most recent fashions, the 655TX provides AGP 8x port for graphics and MuTIOL 16-bit x 533MHz I/O to connect South Bridge.

In order to provide maximum flexibility, value and features to its customers, SiS’ new 655TX is coupled with SiS940-series of I/O controllers supporting Serial ATA-150 with RAID, Parallel ATA, FireWire, USB 2.0, AC’97 audio, 10/100Mb/s Ethernet and other important capabilities.

The only difference between the SiS655FX and SiS655TX announced today is AHSE technology supported by the latter.

First implemented in SiS’ quad-channel RDRAM R659 chipset, Advanced HyperStreaming Engine (AHSE) is a refined version of the HyperStreaming Engine implemented into SiS’ core-logic sets earlier this year. AHSE technology features “Low Latency with single stream”, “Pipelining and Concurrent Execution with Multiple streams”, “Prioritized Channel with Specific stream”, “Smart flow control and Intelligent arbitration with Smart stream” and “Advanced stream accelerative technology”, compared to Intel’s PAT, provide a remarkable improvement in transfer speeds between the CPU, DRAM and the MCH. While AHSE shares the same high-speed hardware read/write capabilities that are inherent to the original HyperStreaming Engine, it is also compatible with identical operating environments and supports the same graphic and audio capabilities. The outstanding memory bandwidth supported by AHSE makes a clearly noticeable improvement in overall system performance.

SiS claims that its Advanced HyperStreaming Engine is able to push PC performance to the new heights.

Officials from SiS said SiS655TX had successfully entered the mass production stage, and mainboards adopting the SiS655TX chipset will be available in the market in November this year.