I recently crossfired my 6870's and have encountered some strange problems. My performance with both cards with crossfire enabled is worse than just a single card.
Both cards work perfectly and I am running the latest CCC and application profiles. GPU-Z also recognizes both cards and so does Furmark.
I play on a 21.5 inch display at 1920 by 1080. Most games I play have lost about 30-40 frames when crossfire is enabled; except league of legends where I can only get 1 FPS
I have no idea what to do V sync is not turned on in any of the games I play. help????
ASrock 970 extreme3
2x AMD 6870's(Sapphire and ASUS)
8gb of G.Skill Ram
OCZ ZT 750w PSU.
GAMES I PLAY
League of legends