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780ti SLI issues

kev507
By kev507
in Graphics Cards
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Go to solution Solved by niofalpha,

Could be a CPU bottleneck.

I believe the 8300 bottlenecks a single 780 Ti, so 2 probably won't fair much better...

 

 

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Noticed laggy performance in my new rig (mostly hand-me down), so I ran a valley bench on it. I've seen sli 780ti's hitting 5500-6500 points in valley benchmark extreme hd preset, but mine just scored 3120 which is about what just 1 780ti should get. I have already checked and yes, SLI is enabled in nvidia control panel. Any help would be appreciated

 

Specs:

AMD FX-8300 oc to 4.4 all cores

Gigabyte 990FXA-UD5

16gb Avexir Blitz 1.1 1866mhz

Samsung 850 evo 250gb

(2x) PNY 780ti reference, stock settings

RM1000 PSU
Win 8.1 Pro 64 bit

 

notes: in the original valley run, temps never go over 82, and gpu usage varies from 50-85% on each card. MSI afterburner also reports the cards staying at 876 mhz, as if boost clocks are disabled

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Noticed laggy performance in my new rig (mostly hand-me down), so I ran a valley bench on it. I've seen sli 780ti's hitting 5500-6500 points in valley benchmark extreme hd preset, but mine just scored 3120 which is about what just 1 780ti should get. I have already checked and yes, SLI is enabled in nvidia control panel. Any help would be appreciated

 

Specs:

AMD FX-8300 oc to 4.4 all cores

Gigabyte 990FXA-UD5

16gb Avexir Blitz 1.1 1866mhz

Samsung 850 evo 250gb

(2x) PNY 780ti reference, stock settings

RM1000 PSU

Win 8.1 Pro 64 bit

Do you have the latest drivers? The new GTA V drivers have been observed to decrease overall performance outside of GTA V itself. Try reverting back to an older driver

“When life gives you lemons, don’t make lemonade. Make life take the lemons back! Get mad! I don’t want your damn lemons, what the hell am I supposed to do with these? Demand to see life’s manager! Make life rue the day it thought it could give Cave Johnson lemons! Do you know who I am? I’m the man who’s gonna burn your house down! With the lemons! I’m gonna get my engineers to invent a combustible lemon that burns your house down!”

- Cave Johnson, founder and CEO of Aperture Science, in Portal 2

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Do you have the latest drivers? The new GTA V drivers have been observed to decrease overall performance outside of GTA V itself. Try reverting back to an older driver

I am on the GTA driver, I'll try rolling back

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I am on the GTA driver, I'll try rolling back

Here is a link for the previous driver:

http://www.geforce.com/drivers/results/83080

“When life gives you lemons, don’t make lemonade. Make life take the lemons back! Get mad! I don’t want your damn lemons, what the hell am I supposed to do with these? Demand to see life’s manager! Make life rue the day it thought it could give Cave Johnson lemons! Do you know who I am? I’m the man who’s gonna burn your house down! With the lemons! I’m gonna get my engineers to invent a combustible lemon that burns your house down!”

- Cave Johnson, founder and CEO of Aperture Science, in Portal 2

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Could be a CPU bottleneck.

I believe the 8300 bottlenecks a single 780 Ti, so 2 probably won't fair much better...

 

 

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booted into safe mode, used display driver uninstall to wipe drivers, rebooted then installed 347.88. Enabled SLI, rebooted, re-ran and scored 3088

 

Well the proper way to do it is: Have the newest NVIDIA drivers downloaded along with the newest version of Display Driver Uninstaller. Then uninstall the NVIDIA drivers from the control panel. Then unplug your modem and restart. Upon restarting open up Display Driver Uninstaller. It will tell you to boot into Safe Mode. Hit accept. Once computer restarts and boots into safe mode. When Display Driver Uninstaller opens, make sure you first start with remove AMD drivers (and do not restart), then remove NVIDIA drivers (and do restart). After you restart install Newest NVIDIA drivers (select clean install, and custom install to only install the bare essentials like the Driver, HD Audio, Phys-X.). Then Restart after they are installed. (You can plug modem back in) Once you are restarted, open up NVIDIA control panel and enable SLI. Also make sure you do the following, make sure if you only have one monitor select Single Display mode. Also change power management to Prefer Maximum Performance. Lastly make sure your power options in Windows control panel are set to High Performance. After you done all this, then re-run the benchmark. Report back. Then we can go from there.

 

 

https://linustechtips.com/topic/1381504-community-standards/

 

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Well the proper way to do it is: Have the newest NVIDIA drivers downloaded along with the newest version of Display Driver Uninstaller. Then uninstall the NVIDIA drivers from the control panel. Then unplug your modem and restart. Upon restarting open up Display Driver Uninstaller. It will tell you to boot into Safe Mode. Hit accept. Once computer restarts and boots into safe mode. When Display Driver Uninstaller opens, make sure you first start with remove AMD drivers (and do not restart), then remove NVIDIA drivers (and do restart). After you restart install Newest NVIDIA drivers (select clean install, and custom install to only install the bare essentials like the Driver, HD Audio, Phys-X.). Then Restart after they are installed. (You can plug modem back in) Once you are restarted, open up NVIDIA control panel and enable SLI. Also make sure you do the following, make sure if you only have one monitor select Single Display mode. Also change power management to Prefer Maximum Performance. Lastly make sure your power options in Windows control panel are set to High Performance. After you done all this, then re-run the benchmark. Report back. Then we can go from there.

will do

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-

This result came out to 3083. I am going to try removing one card at a time to test them on their own

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That's what I was going to say next.

GPU 1 was good for 2723 and GPU 2 was 2563

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Have you tried swapping the positioning. Like take the card you had on top and put it in the bottom, and take the bottom card and put it in the top.

not yet, I'll go for that now

 

3085 score w/ GPU 2 on top. This board has 5 pcie x16 slots, and recommends using slots 1 and 3, so those are the ones I've been using the entire time. Once they cool a bit I'll swap positions.

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not yet, I'll go for that now

 

3085 score w/ GPU 2 on top. This board has 5 pcie x16 slots, and recommends using slots 1 and 3, so those are the ones I've been using the entire time. Once they cool a bit I'll swap positions.

 

What's slot number 2? Have you tried that?

 

 

https://linustechtips.com/topic/1381504-community-standards/

 

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What's slot number 2? Have you tried that?

slot 2 is covered when gpu 1 is in the first x16 slot, and the mobo manual says it's only wired for pcie 2.0 x4

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How many PCI-E slots do you have on your motherboard? What is your motherboard?

gigabyte 990fxa-ud5, w/ 5 x16 pcie slots. The manual recommends slots 1 and 3, and then slot 5 for 3 way sli

 

also, I just noticed that one card is on bios 80.80.30.00.01 while the other is on 80.80.34.00.80

That .80 is the latest 780ti bios, I may try updating the one that's running on and old bios. My mobo is on the latest bios btw

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I get similar scores with my 980 SLI.

 

I think it's just bottlenecking.  

4K // R5 3600 // RTX2080Ti

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I get similar scores with my 980 SLI.

 

I think it's just bottlenecking.  

are you running at the extreme HD preset (1080p) or at 4k?

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gigabyte 990fxa-ud5, w/ 5 x16 pcie slots. The manual recommends slots 1 and 3, and then slot 5 for 3 way sli

 

also, I just noticed that one card is on bios 80.80.30.00.01 while the other is on 80.80.34.00.80

That .80 is the latest 780ti bios, I may try updating the one that's running on and old bios. My mobo is on the latest bios btw

 

Can you try slot 2 and slot 3? or does that get blocked?

 

 

https://linustechtips.com/topic/1381504-community-standards/

 

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Can you try slot 2 and slot 3? or does that get blocked?

when there is a card in slot 2 (pcie 2.0 x4) that will block slot 3 (pcie 2.0 x16)

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are you running at the extreme HD preset (1080p) or at 4k?

 

Extreme HD preset.  Get about 3000-3100 ish score.

4K // R5 3600 // RTX2080Ti

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Extreme HD preset.  Get about 3000-3100 ish score.

well that's not looking so good for AMD...

 

Have you tried a program like 3DMark11 or 3DMark Firestrike what is your scores there?

haven't yet, I'm going to try updating the card's bios first to see if that helps

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