Hello, I am building a new system and I was planning on putting an R7 260x in my MATX system and in order to fit my sound card in to i will need to put an R7 250 in crossfire with the 260x because the 250 i found from msi is a single slot and the 260x is double and my sound card is single. my mobo will live without the soundcard but it would be nice to have it if i need to run 2 R7 260x in crossfire. Any help on this issue would be greatly appreaciated. Thanks.
-Regards Parker W.
Dude you cant crossfire different cards. Just buy a stronger single card.
As a matter of fact you can. Unlike Nvidia, AMD allows you to crossfire cards with different performance. (Nvidia is restricting is because the result is not ideal and you might blame them for a bad experience. AMD will let you do what you want and assumes you are not an idiot and will figure it out yourself).
https://www.youtube.com/watch?v=pGN1na3F5do
http://www.tomshardware.co.uk/forum/332435-33-crossfire-cards
260x - Bonaire core
250 - Cape Verde core