I received the cards yesterday and they have performed flawlessly. Gameplay in BF3 was very smooth.
I had to add a fan to keep the top card cool and boy did that help (secured with heavy duty double sided tape). I would say its a must for a crossfire config with these cards. It must have dropped temps 15-20 degress. Even at idle, top card was over 50c. Now its 30c.
Both cards were bios 028 and ASIC ratings are 66.0% and 66.9%. Voltage is 1.256.