ASUS Z87-DELUXE Motherboard
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The ASUS Z87-DELUXE comes with two PCI Express 3.0 x16 slots, one PCI Express 2.0 x16 slot (working at x4 speed), and four PCI Express 2.0 x1 slots.
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 eight slots. (Computer cases usually have seven.)
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 supports CrossFireX but not SLI.
In order to accommodate the several additional PCI Express devices that come with this motherboard (Wi-Fi, Bluetooth, etc.), it comes with a PLX PEX8608 switch chip.
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