Quote: Originally Posted by xerox203
In this chart i can see 5800 series compatible with 6800 srs ? ain't 68 compatible with 78 ? :S
That would only be the HD 5750/5770 and the HD 6750/6770 as they are essentially the same card. There are a few updated features on the 6750/6770, but at the heart of each the are the same card. The same does not apply to any other cards from the 5xxx or 6xxx series, and definitely not with any from the 7xxx series.
I heard something like, you can xfire the cards but they took the specs of the lowest card ?
That only applies within the same GPU/core family. For example from the chart the any of the 5830/5850/5870/5970 can all be used in Crossfire together because they all have the same core on them, they just have various parts of the core locked off for whatever reason; usually a defect that prevents it from being a 5870, but it perfectly fine as a 5850 or a 5830. The 5970 is essentially 2 5850's on a single PCB. That is where what you heard about them running at the specs of the lower card is from.