According to SiS, volume shipments of its Intel P4 PCIe-enabled core-logic chipsets, the SiS649 and SiS656, will begin in the second half of December. Both parts have the following specifications in common: Support for Pentium 4 & Celeron HT support Support for both AGP and PCI-Express 2 PCI-E x1 ports DDR2-533/DDR-400 4 SATA ports with RAID0, 1, 0+1, JBOD 8 USB 2.0 ports 2 ATA133 ports 10/100/1000 Mbit Ethernet The lower-end part SiS649 is Single Channel Memory, Max. 2GB, No ECC. The SiS656 is Dual Channel, Max. 4GB, ECC memory is supported.