Hardware Secrets take a look at this socket 2011 motherboard from Intel based on the new Intel X79 chipset and targeted to the new Core i7 “Sandy Bridge-E” CPUs. A quote from the article:

Intel has released two motherboard models for the new socket 2011 platform, the DX79SI and the DX79TO, targeted to the most high-end processor Intel offers for desktops today, the Core i7 "Sandy Bridge-E" models. Let's take a look at the DX79SI, which comes with three PCI Express 3.0 x16 slots.

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