I think this is much better than eyefinity...
AND it can be used with eyefinity ?
Anyways, it looks awesome.
Well, the CDM43 has no DisplayPort. So if you want to use more than two of them on a single card you will have to use an adaptation. (Eyefinity requires every display after the second is connected via DisplayPort). Besides that there is no reason why it shouldn't be incompatible to Eyefinity.