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Sli wont enable

Last response: in Graphics & Displays
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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

More about : sli wont enable

September 18, 2012 6:50:51 PM

is it possible to sli outside of the nvida control panel
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a c 172 Î Nvidia
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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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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a c 172 Î Nvidia
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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September 18, 2012 8:09:02 PM

have any ideas
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a c 172 Î Nvidia
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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September 18, 2012 8:19:08 PM

using the top slot and 2nd from top
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a c 172 Î Nvidia
September 18, 2012 8:25:57 PM

You said 3 & 2 in your first post.
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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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a c 172 Î Nvidia
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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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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a c 172 Î Nvidia
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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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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a c 172 Î Nvidia
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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a b Î Nvidia
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
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a c 172 Î Nvidia
September 19, 2012 5:01:52 PM

Wolfshadw said:
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

Ahh, now it all makes sense.

Thanks for that Wolf.
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September 19, 2012 8:18:06 PM

everything is correctly placed i think it may be my driver but i have tried various
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September 20, 2012 12:23:02 AM

going to try 600 series driver
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September 20, 2012 1:37:34 AM

tried and it did the same thing need some help over here
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November 4, 2012 9:26:47 PM

Try an older driver... I cant enable SLI with the new drivers nether.. :(  If windows is pirated it will not let you SLI nether(Unless you figure it out ;)  ) But try 304.79 drivers, Witch is the only driver so far that ive found that will SLI :-\
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