Ok, I updated the bios to the latest, but still I cannot get both gpus to run correctly. I was able to tweak the clocks to 825/825 which gives me around 90MH, basically 3 GPUs worth of hashrate... out of curiousity, I added -t 3 to the ethminer command to run 3 of the 4 GPUs, and sure enough, it ran at stock clocks , but the minute I tweaked the clocks, poof, it crashes.

What is more troublesome, I added a pair of powered PCI-e extenders so the cards were not drawing any power off the PCI-e slots on the motherboard, that didn't work at all. That setup worked just fine with this one board I had, some cheap ass duo core, but alas, I accidentially cooked that board.... now I cannot get any other board to run both GPUs either directly plugged into the motherboard or through extenders.

So, I'm thinking the motherboard's PCI-e slot power is getting weak