To summon up the northbridge, 3ch etc.

Server/Extreme: Socket 1366, 3ch IMC, PCIe/QPI on Northbridge, ICH10 Southbridge.

Performance/Mainstream: Socket 1160, 2ch IMC, ondie PCie, Ibexpeak Southbridge. (No Northbridge)

Value/Budget: Socket 1160, 2ch IMC, ondie PCIe, ondie GPU(IGP), Ibexpeak Southbridge. (No Northbridge)

Intel basicly removed all flexibility on the mainstream/performance. I big F U to nVidia and their locked chipsets for SLi.