“We are aware of incompatibility of the K8T890 chipset with dual-core AMD processors. We have fixed this with the latest chipset silicon which is going to be available and shipping to the mainboard vendors very shortly,” VIA’s spokesman Michal Lisiecki told X-bit labs.More details at X-bit Labs
VIA K8T890 chipset incompatible with Athlon 64 X2

VIA said its K8T890 chipset isn't compatible with AMD's dual-core Athlon 64 X2 processors. The company didn't mention the exact reason of the incompatibility but said it will soon launch a chipset which supports AMD's dual-core desktop processors.