The Radeon 4870 X2 video card has a special version of internal CrossFireX technology. Essentially, the second core in the video card activates by itself as needed (i.e. during high-end gaming or video graphics design, etc.) and there are no user adjustments that can be done to activate or deactivate it. Furthermore, since each core on the video card has its own dedicated 1 GB of RAM, the CCC will only show the memory assigned to the one active core – thus you will see only 1 GB of RAM as available video memory whenever you are in desktop environment or doing anything that does not require the utilization of the 2nd core. Once the video card is under load that would require the 2nd core to activate – each core would then have its own 1 GB of memory to work with.
If your card has 4 monitor outputs, CCC would report the setup as “two” separate cards where you will see each cards’ individual memory and would have the ability to disable or enable CrossFireX.
If you have any questions, please reply back to this email or contact us at 408-749-3060 for North
America CPU Support, 44-1276-803299 for EU CPU/GPU Support or 1-877-284-1566 for North
America GPU support.
In order to update this service request, please respond, leaving the service request reference intact.
AMD Global Customer Care