And even unlocked, how would it compare to my crossfire setup?
I know the AnanTech figures are to be taken with a pinch of salt however it seems my setup would be a lot faster.
You're not going to find a single GPU card to outdo your Crossfire setup.
They even compete with a GTX 580:
CF HD 5850 v GTX 580
The only possible limiting factor of your Crossfire setup is the 1GB of VRAM.
