Besides a chipset for AMD’s Hammer platform, Silicon Integrated Systems (SiS) today also announced its SiS655 core-logic for Intel Pentium 4 processors. This is the first core-logic device for the Pentium 4 platform that offers dual-channel DDR SDRAM configurations.

SiS655 North Bridge supports Intel Pentium 4 processors with 400/533MHz Quad Pumped Bus and can take advantage of the Hyper-Threading technology. The novelty offers dual-channel PC2700 memory controller, providing 5.2GB/s of peak bandwidth, more than the Granite Bay or SiS R658 can provide us. It should be pointed out that SiS655 is able to work in either 128-bit dual-channel mode or in 64-bit concurrent mode. For the former case, you will have to install either two or four totally identical memory modules, while for the latter configuration, you can install any number of DIMMs you would like. As all the latest North Bridges from SiS, this one supports up to 4GB of DDR SDRAM and AGP 8x as well. SiS655 chipset utilizes SiS’ MuTIOL 1G technology in order to connect the SiS655 North Bridge with SiS963 I/O controller. The SiS963 features the IEEE 1394a high-speed connector, USB 2.0 and Dual Parralel ATA-133/100/66 IDE channels.

The actual mainboards based on the new addition to the SiS’s family of chipsets will appear shortly. For instance, ASUS announced its P4SDX based on SiS655 a couple of weeks ago (see this news-story).