Rev.A1 MCP7A. A early stage product only for engineering purpose, which means you won’t see it in retail market.
Because of Hybrid SLI, NVIDIA mainstream market strategy is now facing a big change. The new chipset, MCP7A-H, have been canned before it enters the market. Because it is lack of integrated graphic, can not meet the needs of NV’s recent changed strategy.
But instead of canceling, 730i will keep exist and have new chipset, the MCP7A-S. In other words, MCP7A-S will have two names, one is GeForce 9xxx (still can not conform its name) and the other is 730i. The GeForce 9xxx is a uATX form factor mobo, with less PCI, PCIe and other expansion slots. 730i is a ATX mobo and has more expansion slots.
MCP7A-U is the top class chipset in the MCP7A family. Though it could be named as GeForce 9XXX, it will be come the first mainstream uATX mobo with DDR3-1333 support. Sources inform us the MCP7A-U will be the “fastest mGPU”, but who knows.
The chips now is in B1 revision stage, and have already taped out, NV will send samples to its partners in May. The final product may hits the market in July, which is also Intel G45′s launch month.