Status update.
Got following:
2x SL8WT's
4x 1GB ECC REG 400MHz DDR2s
1x Board that doesn't work...

The board powers on soon as i plug in the power (not a good sign). All diagnostic leds ligth up as amber and there's no vcore.
There isn't physically anything broken (already swapped one burned fet). Also the smaller heatsink gets hot really fast (Pci-e switch?) so it migth also be toast.

Oh well i better start looking for new board and dissassemble this for spare parts.