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2080 ti not working in sli

Jesus Christ
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I bought a second 2080 ti to pair with my current one(they are both founders edition), when I take one out, my system works properly, what’s going on, neither are faulty either, I tested them both, but when I put both in, no post. My motherboard supports sli as well and my psu is 1200w which should be more than enough so idk what’s going on

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Everything is done correctly just no post when they are both in

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You forgot to mention whether or not you put in the SLI bridge.  It won't work without the bridge.

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Just now, kb5zue said:

You forgot to mention whether or not you put in the SLI bridge.  It won't work without the bridge.

I’m not an idiot I put the bridge on

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3 minutes ago, Jesus Christ said:

I’m not an idiot I put the bridge on

If you read my post, I never said you were an idiot.  But if the shoe fits........

 

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1 minute ago, kb5zue said:

If you read my post, I never said you were an idiot.  But if the shoe fits........

 

Ok sorry I was rude but the bridge is on and I’m not sure why it isn’t working

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Is there anything in the BIOS that could affect the output of the dual cards?  Other than the SLI bridge, the only thing I can think of is something in the BIOS.

 

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4 minutes ago, kb5zue said:

Is there anything in the BIOS that could affect the output of the dual cards?  Other than the SLI bridge, the only thing I can think of is something in the BIOS.

 

I’ve never changed anything in my bios (except enabling xmp) maybe asus’ website or my motherboards manual says something about sli

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3 minutes ago, VioDuskar said:

did you test the new one by itself? 

Yes, it works by itself.

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49 minutes ago, Jesus Christ said:

I bought a second 2080 ti to pair with my current one(they are both founders edition), when I take one out, my system works properly, what’s going on, neither are faulty either, I tested them both, but when I put both in, no post. My motherboard supports sli as well and my psu is 1200w which should be more than enough so idk what’s going on

What's your motherboard, and have you tried both without the sli bridge?

 

Also, have you tried booting with only a single card in the second slot? Maybe the slot itself is faulty. 

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Lenovo N23 Yoga

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What PSU?  Stating the wattage doesn't tell us quality.   Also, did you check the bios to see if any lanes were disabled?   What motherboard?   Did you check them alone in each pcie slot or when you did the sole gpu test did you do it in both slots?

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8 minutes ago, igormp said:

What's your motherboard, and have you tried both without the sli bridge?

 

Also, have you tried booting with only a single card in the second slot? Maybe the slot itself is faulty. 

Motherboard is an asus zenith II extreme alpha, and the first slot can’t be faulty since my first 2080 ti was in it before I got the second one

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14 minutes ago, valdyrgramr said:

What PSU?  Stating the wattage doesn't tell us quality.   Also, did you check the bios to see if any lanes were disabled?   What motherboard?   Did you check them alone in each pcie slot or when you did the sole gpu test did you do it in both slots?

I know both slots work because I tested the second Slot with one of my 2080 tis. Psu is an evga p2 1200w

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Looks like it's a known problem. Is your bios updated? Also, a guy in that reddit thread linked this bios. Not sure if it's safe or if it's even going to work, but you can try that as a plan b.

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Remove the drivers via DDU, then install them again.

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It doesn't even post with both cards in, drivers aren't gonna help...

Looks like known BIOS issue on that particular mobo.

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2 hours ago, Kilrah said:

It doesn't even post with both cards in, drivers aren't gonna help...

Looks like known BIOS issue on that particular mobo.

Oops. Skipped over that part. Yeah. This has been an issue with both the Z1 and Z2.

I see some are using a beta BIOS to get around it.

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Just curious, I don't care at all since it's your money to spend on whatever you want. But why SLi'ing 2080Ti?

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