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PCI-E speeds, so confused, help!

Last response: in Motherboards
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April 28, 2012 12:59:34 AM

I think I want to buy this motherboard because I need one to do SLI 680s...

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

I have a Sandy Bridge i5 2500k cpu

This board will overclock my Sandy Bridge CPU just fine right?

Main question... if I'm running my Sandy Bridge CPU, on this board, with SLI 680s, what PCI-E version and speeds will they be running at sitting in the 2x PCI-E 3.0 slots? Will they be running PCI-E 2.0 x16/x16? 2.0 x8/x8? PCI-E 3.0 x8/x8?

More about : pci speeds confused

a c 92 V Motherboard
April 28, 2012 1:10:39 AM

Yes on the ability to OC (I think...) and seeing as you have a SB CPU then you are limited to PCIe 2.0. I believe that board runs 16x/4x, unless you have something in those slots then it will be 16x/2x.
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a b V Motherboard
April 28, 2012 1:27:51 AM

pcie 3.0 8x is the same as pcie 2.0 16x
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a c 92 V Motherboard
April 28, 2012 1:31:29 AM

How does that matter?

Quote:
seeing as you have a SB CPU then you are limited to PCIe 2.0
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April 28, 2012 1:37:34 AM

so if i have an ivy bridge cpu on that board i can run pci-e 3.0 at x8/x8 in sli? if sandy bridge it will only run pci-e 2.0 at x16/x4 but won't even do pci-e 2.0 x8/x8?
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a c 92 V Motherboard
April 28, 2012 1:42:03 AM

I didn't see from the short newegg description where it even suggested 8x/8x.

Quote:
1 x PCIe 2.0 x16 slot - PCI_E7 supports up to PCIe 2.0 x4 speed (when PCI_E3 or PCI_E6 is empty) or PCIe 2.0 x2 speed (when PCI_E3 or PCI_E6 is installed).


This is from the PCIe 2.0 section. Who cares if it will do 8x/8x if you have PCIe 3.0 as you lack a 3.0 CPU/NB.
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