I have a dual Xeon 2.0GHz with sSpec Number = SL5TH, on your X5DA8, but the mainboard only detects one CPU instead of two?
This Xeon Foster (Vcore 1.7v) with 256kb cache CPU is not supported by our X5DA8 with Intel E7505 chipset. Please use Prestonia (Vcore 1.5v) with 512kb cache processor instead. FYI, the only board that supports this CPU (Foster) is P4DC6+II.