MSI's P55-GD65 @ Bjorn3D
"These new performance grade motherboards are no longer sporting the 3 chip design we've seen in the past. A typical 3 Chip design is a CPU=1, IOH/MCP=2, and South bridge=3. The new 2 chip design consists of Cpu=1, PCH=2. The IOH/MCP have been moved to the CPU for a much lower latency access for the PCI-E lanes and memory. The south bridge has been updated to a much more powerful newer design, named the PCH."