ASRock Fatal1ty Z87 Killer Motherboard
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The ASRock Fatal1ty Z87 Killer comes with three PCI Express 3.0 x16 slots and four PCI Express 2.0 x1 slots.
The three PCI Express 3.0 x16 slots are controlled by the CPU, with the first slot (PCIE2) working at x16 when only one video card is installed. If you install two video cards, the first and the second PCI Express 3.0 x16 slots work at x8 speed. And if you install three video cards, the first slot will work at x8 speed and the other two will be working at x4 speed. In short, the motherboard supports x16/x0/x0, x8/x8/x0, and x8/x4/x4 configurations.
If you plan to install a dual-slot video card in the third PCI Express 3.0 x16 slot, you will have to buy a case with at least eight slots. (Computer cases usually have seven.)
All the three PCI Express 3.0 x16 slots support both SLI and CrossFireX technologies.
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