Alright so I picked up an extra 5770 to add in and installation went great but I'm having a bit of an issue getting it to work right with windows. Nothing is OC'd at the moment and everything is stock as far as voltages go. Crossfire bridge is installed. Checked to see if the cards are seated right and it all checks out. However when I modify settings in the CCC it locks up and reboots. No grey or blue screens just reboots. Then at POST it says that there was a hyper transport sync flood error. Now normally when I would get this it was because the drivers up and corrupted themselves after a certain amount of time using them. Could there be differences between the cards that I am not aware of even though they are the same one? I've had one for a few weeks and I just got the other today. Same card, same box. Its the MSI 5770-PMD1G.