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SLI option not showing up in nvidia control panel?

hey guys,
I recently just sli'd I've got 1 EVGA FTW 670 2GB and 1 GIGABYTE OC edition 670 2GB, anyways my problem is right now is that When i go into the Nvidia control panel the sli option doesn't come up.

Geforce experience recognises both cards and so dose device manager. I've tried changing the bridge clips and reinstalling the drivers (I did a fresh install of my OS then re-installed the drivers)

All help is appreciated!
Specs:

MOBO: Asrock Z77 Pro-3
PSU: Thermaltake SMART 750W
8Gb of DDR3 RAM
4 answers Last reply Best Answer
More about sli option showing nvidia control panel
  1. Your board does not support SLI only Crossfire because the second X16 slot is only X4 speed.
  2. Best answer
    Your motherboard doesn't officially support SLI.

    The Z77 Pro-3 has two PCI Express Slots, one PCIE3.0 that runs at 16x, and one PCIE 2.0 that runs at 4x.

    See Specifications Tab.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813157297

    SLI requires two lanes running at the same speed (8x/8x or 16x/16x). Unfortunately, you will need a new motherboard to utilize SLI.
  3. CraigN said:
    Your motherboard doesn't officially support SLI.

    The Z77 Pro-3 has two PCI Express Slots, one PCIE3.0 that runs at 16x, and one PCIE 2.0 that runs at 4x.

    See Specifications Tab.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813157297

    SLI requires two lanes running at the same speed (8x/8x or 16x/16x). Unfortunately, you will need a new motherboard to utilize SLI.


    thanks for the response mate, I've come to realise this as well and now i'm stuck without a motherboard for SLI. Does anyone know where or which motherboard I can use for my CPU socket 1155?
    thanks!
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