I bought the M5A78L-M/USB3 motherboard and i was wondering can i crossfire it? i thought you need 2 pciex16 slots to crossfire but people on the forum were talking about any pcie 2.1 card fitting in a pciex1. I probably wont crossfire but it would be good food for thought to know that i could if i really wanted to.
Typically you need two cards to crossfire, so with that board you obviously cannot do that. There are cards out there however that have two gpu's built onto one card (like this: http://www.techpowerup.com/reviews/Powercolor/HD_6870_X... ) which is considered crossfire as well. For most people, buying a single gpu card with a bit more graphics power than they currently need is the way to go, and will allow you to avoid any issues that can come with learning/installing crossfire/sli and drivers.