Just a heads up--
I have an Intel DP55KG for my main file server box.
I have a few cards:
1. 3ware 9650SE-16ML
2. 3ware 9650SE-4PML
3. 3ware 9750-24i
From power off -> boot, all works well with #2 & #3 in the same system.
But if you reboot, the 9650SE-4PML does not initialize (where I had my RAID 1), a power off->on fixes it, but this never occurred when I had the two 9650SE's in the same system.
For now I put all the drives on the 9750-24i and its working good.
And the Intel board is running the latest BIOS as of 11/25/2010.
Maybe Intel can release a fix for this.