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SLI soround problem GTX 1080

Hey so im runing 3x 1080 p sourund sli setup . 

 

But i have a problem with the clock speeds . 

 

One of them has led and it is overclocked both are from the same manufacture . They are running at different speed since one of them is factory overclocked . 

 

I know that when i run haven benchamrk i can see one of them is running little faster cloc speed . I think this is making some weard lags and fps drops . 

 

all of the monitors ale conected to the bottom card 

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Only time I’ve had a difference in clock speed was from something not keeping up. 

 

Like if my cpu is struggling, one of my cars will drop. Or both will drop equally. 

 

Are you using nvidia surround for it?

 

The benchmark is prolly single thread bound and causing this issue. 

Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 32GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer KG251Q 1920x1080@240hz 

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer GD235hz 1920x1080@120hz

 

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On 8/4/2019 at 1:29 AM, Mick Naughty said:

Only time I’ve had a difference in clock speed was from something not keeping up. 

 

Like if my cpu is struggling, one of my cars will drop. Or both will drop equally. 

 

Are you using nvidia surround for it?

 

The benchmark is prolly single thread bound and causing this issue. 

The benchmark is good , somtimes just freses for a split second or fps drops and one of the cards stops working then turns backs on . also Navidia panel shows the activity of cards seperetly . 

 

image.png.42ad39b2e9e999c01cd921d8327ae295.png

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You can see them runing at different cloc speeds and also one of them is not runing anything 

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image.png.54210fbc0329ceb6bfa404fe15d8cd69.png

 

Also i cannot conect displays corectly . Im using display port cables . on my cards there are the bottom 3 . the one most to the left is HDMI 

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16 hours ago, Majsterek said:

The benchmark is good , somtimes just freses for a split second or fps drops and one of the cards stops working then turns backs on . also Navidia panel shows the activity of cards seperetly . 

 

image.png.42ad39b2e9e999c01cd921d8327ae295.png

Doesn’t really asnwer anything I asked though. 

Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 32GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer KG251Q 1920x1080@240hz 

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer GD235hz 1920x1080@120hz

 

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  • 7 months later...

I found out that i have to flush the bios of the cards. One is RGB and has a different bios version therefore the clock speeds differe slightliy. 

 

anyone knows a good wah how to flash this ? 

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Clock speeds don’t have to be the same if the usage isn’t high enough for the second card. 
 

Unless you have ran a proper benchmark to ensure the usage for both are at 99% and the clocks speeds aren’t matched there, can’t say that the bios is the issue. 

Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 32GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer KG251Q 1920x1080@240hz 

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer GD235hz 1920x1080@120hz

 

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