Quote:
Originally Posted by Jurassic1024
Except all those slots are wired for PCIe 2.0, and we're talking about using the 3rd slot for another PCIe 3.0 GPU in a slot wired for PCIe 3.0 x4. Am I wrong?
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It is wired for PCI-E 2.0 x4 on the 3rd PCI-E x16 slot.
Asus' Site and NewEgg both says this for Z77 Sabertooth:
Quote:
Expansion Slots
2 x PCIe 3.0/2.0 x16 (x16 or dual x8) *2
1 x PCIe 2.0 x16 (x4 mode, black) *3
3 x PCIe 2.0 x1
...
*2: PCIe 3.0 speed is supported by IntelŪ 3rd generation Core™ processors.
*3: The PCIe 2.0 x16 slot shares bandwidth with PCIe 2.0 x1_1 slot, PCIe 2.0 x1_2 slot and PCIe 2.0 x1_3 slot. The PCIe 2.0 x16 slot default setting is in x1 mode.
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Source
Same is true of the
P8Z77-V DELUXE.
Quote:
Originally Posted by Jurassic1024
I found it odd, if i put my x1 sound card in my second x16 slot (wired for x8), my GPU in the first x16 slot downgrades to x8.
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That is because that first 1x lane is actually the 9th lane on your first slot. They're switched.