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SLI option not showing

Tags:
  • Option
  • SLI
  • Corsair
  • Graphics
Last response: in Graphics & Displays
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August 3, 2013 10:45:43 AM

I know this might sound so often lately. The problem is that SLI option is not showing on my nVidia panel.

My Specs:
Gigabyte Z87X-UD3H [New] (F6 Bios)
i5 4670k [New] (@ 4,5 Ghz)
2x Asus GTX 660 OC (non Ti)
PSU Corsair TX850M
Corsair Vengeance 8Gig (@1.8Ghz)
Windows 8

What I have done:
- Run Asus Gpu Tweak to see the BIOS GPU-Z (No need for updates for both)
- Switch both GTX by PCIe slots (fine)
- Run separately on the 1st PCIe x16 (both GTX are running fine)
- Uninstall driver and using Driver Sweeper (no difference after clear Install)
- Plug in the SLI bridge (upside down vice versa
- Plugin the SATA power on near the PCIe slot
- Downgrade driver to 310 (no difference)
- Disabling integrated GPU

Can anyone tell me how to see if the 2nd PCIe is being populated in BIOS mode?

More about : sli option showing

August 3, 2013 10:57:18 AM

Try resetting BIOS to defaults

Using correct slots (not bottom one) ... using bold ones ?

_________________________________________________________ PCIE3.0 x 16

_______________ PCIEx1

_______________ PCIEx1

__________________________________________________________ PCIE3.0 x 16

_________________________________ PCI

__________________________________________________________ PCIE x 16
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August 3, 2013 10:58:28 AM

Have you tried running without the OC on the CPU?
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August 3, 2013 11:21:25 AM

JackNaylorPE said:
Try resetting BIOS to defaults

Using correct slots (not bottom one) ... using bold ones ?

_________________________________________________________ PCIE3.0 x 16

_______________ PCIEx1

_______________ PCIEx1

__________________________________________________________ PCIE3.0 x 16

_________________________________ PCI

__________________________________________________________ PCIE x 16


Yup the 1st and 2nd PCIe x16...
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August 3, 2013 11:22:48 AM

Mousemonkey said:
Have you tried running without the OC on the CPU?

Yup plenty of times... I think it should be somewhat regarding the registry (not sure tho.)
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Best solution

August 3, 2013 11:47:26 AM

You could try removing the Nvidia drivers, then reinstall them with only one card installed. Reboot, shutdown, then install the second card and start the computer.

SLI can be tricky to get working, my friend had an issue where he could not enable SLI because the SLI section in NCP was showing a small . instead of SLI and Physx. It still worked but he had to click the dot to get it to access the SLI menu! very strange
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August 5, 2013 4:01:39 PM

Solved... It seems the problem is due to an unbalanced position of the card against the PCIe slot (my guess due to slightly uneven Mobo to chassis). Also that might be a solution is that the additional power port near the PCIe is not sufficient enough (try to connect it directly to PSU), and Update to the latest BIOS...
So for those who have the same problem as mine, try to build your system outside the case first, make sure all the system works flawlessly. Then you can start assemble them inside the case. Perhaps this gen3 PCIe slot are quite sensitive, I would also suggest a physical revision of the slot otherwise a rigid back plate on the GPU will be necessary...
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