It has two PCIEx16 slots. One runs at x16 and is for your GPU. The other is x4 and can be used for a secondary PhysX GPU or some other expansion card (Ramdisk maybe) that you might add in the future. Its not very good for crossfiring two GPUS.
 

nativeson8803

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Oct 26, 2009
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I have an MSI board- P45 Platinum. It's great, but I had to hunt down a beta bios v.1.7 for that to be true. Also, they are a chinese company and the support is only so/so and the manuals are pisspoor and barely readable.

hardwarewise, it's a good board. Update the bios, mine shipped with 1.4....