[Ment69]

Можно ли переместить Dual Channel пару на соседние слоты(программно, через биос и т.п.)? »

Нельзя!

Сгорели первые две пары »

Как?
Вы мануал читали?

Intel® 5000X Memory Controller Hub (MCH) The Memory Controller Hub (MCH) is a single 1432-pin FCBGA package, which includes the following core platform functions: �� System Bus Interface for the processor subsystem �� Memory Controller �� PCI-Express Ports including the Enterprise South Bridge Interface (ESI) �� FBD Thermal Management �� SMBUS Interface This section provides a high-level overview of some of these core functions as they pertain to this workstation board. You can obtain additional information from the Intel S5000 Server Board Family Datasheet and the Intel 5000 Series Chipset Memory Controller Hub Datasheet.

У вас по ходу с чипсетом проблемы. Либо с питанием первых слотов.