Help needed with second non-SLI gpu

[Manny_NotTheStig]

I have recently got a GTX 980 TI to power my triple monitors for iracing. I added a GTX 650 TI for a fourth monitor for OBS/Twitch (and possibly a 5th monitor later for racing telemetry), so the 980TI will not have to do any extra work. I them both installed, running 361.75 drivers. When I tested this out, I was getting worse frame rates than with just the 3 monitors (which is the opposite of what I thought would happen, what I was hoping for). Then I noticed in PrecisionX the core clock for the GTX 650 TI was only 324, when it should 968 or something like that. My understanding of this is that the 650 is just sitting there while the 980 is still doing all the work.

 

Here's what I've tried. I used DDU to uninstall drivers, turned of the pc took out the 980ti and reinstalled drivers. The 650ti works right boosting up to 928mhz even though it's in the secondary PCIe slot. So I know it works. Then I Uninstalled again, put the 980ti back in and reinstalled the drivers. Same Issue. I even moved iracing from my triples to the single 4th monitor (that should be powered by the 650ti), yet the 980ti is boosting to 1400 while the 650ti remains at 324. It doesn't make sense.

I have made sure power management in nvidia control panel is set to performance and not adaptive, and I also have performance mode set for power management in windows 10. I have a HX1050 so there's plenty of power to go around.

How can I correct this? Is there any setting in the NVidia control panel I have set wrong? Any help is greatly appreciated.

 

 

[Manny_NotTheStig]

No ideas?

[Imakuni]

Did you try putting all 4 monitors on the 980ti? Things such as a twitch screen don't really put any extra stress on the GPU.

[Manny_NotTheStig]

I did. There is some drop in frame rates which is why I got the gtx 650ti to compensate and also so I can add 5th monitor. 

This actually started as sort of a benchmark for different ways to connect 4th monitor running OBS. I ran by myself on a demanding track on iracing at night, while streaming. I initially tested with a gt610 and saw a lower frames so I tried the gtx 650 instead. I was getting about the same numbers as the gt610. 

[Dash Lambda]

It's my understanding that the GPU on the primary display does all the work and the secondary GPU simply passes the image through.

I'm not absolutely certain, mind you, but this is how I thought it was supposed to work.

 

I have a similar config to yours, except my secondary is a 780 and I'm not doing surround. The 780 sits at 324 as well and its load rarely even registers. Odd thing is, though, I didn't actually notice a performance hit...

 

What are the other specs of your system?

[Manny_NotTheStig]

That's the thing. Every one else seems to be reporting no change or performance gains, but I have performance loss. This leads me to think there's something else going on.

 

My system specs

Windows 10 retail 64bit

i7 4790K with H100

MSI Z97 G45

EVGA GTX 980 TI with add-on AIO cooler 

EVGA GTX 650 TI

Samsung Evo 500gb SSD

Corsair Vengeance 4 x 4gb

Corsair HX1050