We do not currently offer an Intel® Desktop Board that supports 2 Intel® Core™i7 processors.
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There is a workstation motherboardwhich takes CPUs form the Xeon 5500 series. The S5520SC.
These CPUs have similar specification to the Core i7 CPUs and you can put 2 CPUs on the board. It isn't 'technically' a desktop board but i guess it could be used as such.