Sli wont enable

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Last response: November 4, 2012 9:26 PM in Graphics & Displays

steezyyo

September 18, 2012 6:21:37 PM

i have 2 550 tis with a asrock 990fx extreme 3 i put my card in pcie 3 and 2 as directed and hooked up all the power cables and firmly connected sli bridge i then intalled nvida control panel and looked under 3D there was no sli option i then went to bios and disabled hd audio that failed so i installed newer driver this also failed both cards work and phsx identifys them both i have monitors connected on both card and they all work what am i doing wrong i have used sli before on a diffrent rig so i know where the sli option should be

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steezyyo

September 18, 2012 6:50:51 PM

is it possible to sli outside of the nvida control panel

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Mousemonkey

September 18, 2012 6:55:20 PM

steezyyo said:

is it possible to sli outside of the nvida control panel

Not that I'm aware of.

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steezyyo

September 18, 2012 6:56:24 PM

one of the cards is a 1 gb and the other is 2 is this the problem

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Mousemonkey

September 18, 2012 7:07:44 PM

steezyyo said:

one of the cards is a 1 gb and the other is 2 is this the problem

It shouldn't be unless there is a difference in the bit rate or DRAM speed.

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steezyyo

September 18, 2012 8:09:02 PM

have any ideas

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Mousemonkey

September 18, 2012 8:11:32 PM

Using slots 3 & 2 seems odd, 1 & 2 or 1 & 3 would make more sense as the primary slot is usually always used.

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steezyyo

September 18, 2012 8:19:08 PM

using the top slot and 2nd from top

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Mousemonkey

September 18, 2012 8:25:57 PM

You said 3 & 2 in your first post.

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steezyyo

September 18, 2012 8:34:58 PM

thats what the manual said so i just assumed they numbered them backwards because the sli bridge only fits this way

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Mousemonkey

September 18, 2012 8:54:07 PM

Fair enough, have you moved the cards around as far as the SLi bridge will allow?

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steezyyo

September 18, 2012 9:15:38 PM

yes i have no go its a solid sli bridge so it will only work at one spot is it possible for a slid bridge to be upside down i think it may be the 500 series driver aswell can i use the 660ti driver

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Mousemonkey

September 18, 2012 9:40:08 PM

I have never found an SLi bridge to have a particular orientation and Nvidia drivers are universal in that the latest and greatest will work on both my 8800GT and GTX560Ti's. Have you recently installed Windows? I ask because I have had issues with MS updates in the past.

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inerax

September 18, 2012 9:48:12 PM

Do you have both monitors connected to 1 card do you have a monitor connected to both.

Also, have you reinstalled the drivers?

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Mousemonkey

September 18, 2012 9:53:59 PM

Quote:

I don't think that the board is sli compatible. I looked on newegg and the extreme 3 does not list sli. Are you sure its compatible? I could be wrong.

You could have a point there, I know some AMD boards got SLi certification some time after their release but I don't know if the OP's board is one of them.

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inerax

September 18, 2012 9:55:39 PM

http://www.asrock.com/mb/AMD/990FX%20Extreme3/

ASRock website shows it.

This is your motherboard correct?

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Wolfshadw

September 19, 2012 1:19:39 AM

Just for clarification, the PCIE slots are listed as:

PCIE1 - Top PCI-Ex1 slot
PCIE2 - Top PCI-Ex16 slot
PCIE3 - Middle PCI-Ex16 slot
PCIE4 - Bottom PCI-Ex16 slot

The two cards should be in PCIE2 and PCIE3. Are you using the SLI bridge that came with the motherboard?

-Wolf sends