X58 to ICH10R is DMI btw, not QPI. And there is no Southbridge or QPI on Lynnsfield. The Ibexpeak(New southbridge) is connected via DMI. And its actually 5GT/Sec if we have to use that term. (4GB/sec, 2GB/sec each direction).
And most Lynnsfield boards will be 1 x16 and not 2 x8.

