While I waiting on the vendor for a RMA number I decided to take one last look at this.
Could this be a PCIe socket power issue? My old motherboard had a PCIe v2 slot. The Gigabyte motherboard is PCIe v1. As I understand it PCIe 16x v1 supplies 75W. I remember hearing a long while ago v2.0 would be 150w but I don't know that for a fact. PCIe cards are supposed to be backwards compatible. The video card specs says:
PCI Express or PCI Express 2.0-compliant system motherboard with one vacant PCI Express x16 slot
The standard 9800GT is supposed to draw 105w peak. According to the specs I have read the Eco 9800GT is supposed to draw 30% less power which comes out to 73.5w. So this puts it under the PCIe v1.0 spec of 75w. To me the answer is clear cut but I thought I'd bring it up anyway.
Arggg. If I just had another PCIe card with a power connector I could have tested this and been done with it. Damn changing technology.