Hi, I recently crossfired an MSI 5830 with an MSI 5850 on my Asus M4A89gtd pro/USB3 motherboard. Both of the cards are twin frozr II.
Before the crossfire I had the 5830 single.
The motherboard has 2 pci-e slots, and the bottom one is the master card slot.
So, at first, I put the 5850 in the...