The Biostar TP67XE comes with two PCI Express x16 slots, which are controlled by the CPU, not the chipset. The first slot works at x16 when only one video card is installed, but both slots drop to x8 when two video cards are used. They support both CrossFireX and SLI modes.

It is important to understand that the TP67XE has two slots between the two PCI Express x16 slots, meaning that you can install a video card that occupies three slots and still install a second video card in the second PCI Express x16 slot. There are two slots between the second PCI Express x16 slot and the motherboard edge, meaning that you can also install a video card that uses three slots in the second PCI Express x16 slot while still using a standard seven-slot case.

If you install a dual-slot video card in the first PCI Express x16 slot you will “kill” one of the PCI Express x1 slots, while if you install a dual-slot video card in the second PCI Express x16 slot you will “kill” one of the standard PCI slots.

The motherboard has two PCI Express x1 slots, located between the two PCI Express x16 slots, and two standard PCI slots, located between the second PCI Express x16 slot and the motherboard edge.

It is important to understand that the P67 and H67 chipsets don’t support standard PCI slots anymore, and the PCI slots are provided by an ITE IT8893 bridge chip.

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Figure 2: Slots