Ok, on the motherboard, it says there there are two PCI-E x16 slots, one is PCI-E x16_1, and the other is PCI-E x16_2. According to the specs, if I put two cards in crossfire, it'd work at x16, and x4. How does that work if both slots are x16? Does it matter which one I put my graphics card in or is one actually x4 instead of x16? If I installed a PCI fan, where would I put it? (people say that if the PCI fan and GPU are too close to each other, there's a high pitched noise) Thanks for any help guys.