Originally Posted by Durvelle27
I have a question. Will i lose performance by crossfiring a R9 290 with R9 290X ?
Originally Posted by BradleyW
No, you won't really see a performance different between 290X CFX and 290 + 290X CFX. They practically perform the same since they are basically the same card. At most a 2-3c difference on a very GPU demanding game.
When you CF 290 with a 290x, the performance will be exactly like 290 CF. It is even worse in case you can't keep them cool, because 290x is hotter than 290.
So the better choice is to buy another 290 for 290 CF. Or if your cooling is good, sold the 290 and get a couple of 290X for the best CF performance