How many cards does Crossfire support?

[nipponese]

I have seen a few cards out there (like the ASUS Rampage IV Extreme LGA 2011) that carry 4+ 16x PCI-e slots. In fact, the Rampage IV Extreme carries seven.

I am not familiar with Crossfire, but it's my understanding that the max number of GPUs this feature will support is four. Does this mean I can only mine with four cards per board?

[darksoft]

I have seen a few cards out there (like the ASUS Rampage IV Extreme LGA 2011) that carry 4+ 16x PCI-e slots. In fact, the Rampage IV Extreme carries seven.

I am not familiar with Crossfire, but it's my understanding that the max number of GPUs this feature will support is four. Does this mean I can only mine with four cards per board?

Crossfire is not needed for mining.

[SpeedDemon13]

It's four AMD GPU's and not required for Scrypt mining. If you enabled it during mining, it will actually make you lose a good amount of hash rate.

[e521]

It's four AMD GPU's and not required for Scrypt mining. If you enabled it during mining, it will actually make you lose a good amount of hash rate.

from my personal experience it doesn't alter the hash rate in any way