Sources at Taiwanese motherboard makers leaked that NVIDIA plans to release its MCP 73 chipset on September 25th.
Here's some more info about MCP 73:
Five versions of the MCP 73 will be introduced, four including an IGP; GeForce 7150 nForce 630i, GeForce 7050 nForce 630i, GeForce 7050 nForce 620i and GeForce 7050 nForce 610i, and a single non-IGP chipset the nForce 630i. The chipsets series will support PCI Express and Intel CPUs ranging from the Core 2 family to Celeron D, noted the sources.
The GeForce 7150 nForce 630i, GeForce 7050 nForce 630i and nForce 630i chipsets support Intel processors with FSB speeds up to 1333MHz and single-channel DDR2 800 memory, while the GeForce 7050 nForce 610i will support processors with FSB speeds up to 1066MHz and DDR2 667 memory, noted the sources.
Although MCP 73 IGP chipsets have support for HDMI, HDCP and PureVideo HD, the fact that their memory controllers only support single-channel configurations means that the chipsets are expected to focus on the entry-level market, commented the sources.