ASUS GRYPHON Z87 Motherboard
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The ASUS GRYPHON Z87 comes with two PCI Express 3.0 x16 slots, one PCI Express 2.0 x16 slot (working at x4 speed), and one PCI Express 2.0 x1 slot.
The two PCI Express 3.0 x16 slots are controlled by the CPU, with the first slot working at x16 when only one video card is installed, and with both working at x8 when two video cards are installed.
The third PCI Express x16 slot is 2.0 and works at x4. If you plan to install a dual-slot video card in this slot, you will have to buy a case with at least five slots. (Computer cases targeted to microATX motherboards usually have four.) This slot cannot be used if you install a dual-slot video card in the second PCI Express 3.0 x16 slot.
The PCI Express 3.0 x16 slots support both SLI and CrossFireX technologies. It is important to note that, according to the motherboard’s manual, the PCI Express 2.0 x16 slot doesn’t support these technologies and can’t be used to install a third video card under SLI or CrossFireX modes.
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