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Question regarding PCIe speeds

Last response: in Motherboards
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December 19, 2011 10:10:24 PM

ASUS Maximus IV Extreme-Z LGA 1155 Intel Z68 SATA 6Gb/s USB 3.0 Extended ATX Intel Motherboard

Obviously a popular motherboard. I'm having trouble trying to figure out how each of these PCI ports operate.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It says under the PCI specification:

PCI Express 2.0 x16: 4 (x16 or dual x8 or x8, x16, x16)
PCI Express x4: 1
PCI Express x1: 1

I am confused as to what this exactly means. Do the 2.0 ports operate at dual x16 speeds for SLI? I want to use two nVidia cards for SLI and I want to make sure I am getting dual x16.

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Anonymous
a b V Motherboard
December 19, 2011 11:47:52 PM

That mobo only gets you dual x8. But the difference between dual x16 and x8 is not important.
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