Dell PowerEdge Precision 690 Series Intel LGA771 Server System  Motherboard DT029 0DT029 CN-0DT029.

Dell Part Number: DT029 0DT029 CN-0DT029
Compatible Part Number: F9394 0F9394 CN-0F9394
Compatible Dell Models: Dell Precision 690

Specifications:

Socket: 2 LGA 771
CPU (Type): Dual-Core 5100 or Quad-Core 5300 series 64-bit Xeon
RAM (Type): DDR2 FB-DIMM
Chipset: Intel 5000x