monitorhero
 Hey Sajin,
 
I enabled SLI. I used precision x with your values.
Each card settled at 1936mhz without overclock and 127% Power Limit and 100% fan speed.
 
What I noticed very strange is that the card in slot 2 gets used for heaven when I disable SLI.
I would expect the upper card to be used. Is that normal behaviour? I changed the colors of the temp monitors to see which card is which.
 
Shouldn't card 1 be the card in the upper slot in the EVGA Precision X?
 

 
The nvidia control panel registers them correctly. In the x16 Slot is the card with the monitors that is shown as card 2 in precision x and not being used in Heaven.
 

monitorhero
After following the advice from AHowes it works now without freeze. I used DDU and installed both cards again with the newest driver.
But the overclocking potential didn't improve. I can now apply the overclock I can apply to a single card. It seems very low still. +60/+80

monitorhero
So both cards lock up with BDOS video_tdr_failure (nvlddmkm.sys) at +70 / +90
 
Since both have the same capacity it seems like something else is the issue? Or is that all I can expect from a FTW3? (both have Micron memory)
 

AHowes
Don't use afterburner. It cant control all 3 fans. Only the GPU fan (far left).. not the memory and power fan.

Try uninstalling evga's precision x oc and after delete the retaining evga folder under the c:/ drive.. then download and run DDU in windows safe mode. Uninstall all nvidia drivers with it.

Then install the latest nvidia drivers with both cards installed. Then reboot and then install the latest version of evga's precision x oc.

Test

 
Did it exactly like that. No change. My Vray Benchmark just got slower 1 second. Still no overclocking possibilities with Precision X.
Another reason why I don't use PX is that it changes my font in every Half Life game to enormous size. It's an absurd error that was never fixed.
 
I am not sure if that problem is really unrelated. I noticed it on my laptop too and on the laptop of my girlfriend.
 
Also I changed from driver version 399.24 to 416.94
 
I got a much lower score with the new drivers in Heaven (2422 vs 2377)
Single card gave me 2450. Doesnt Heaven scale with multiple gpus?
Vray Benchmark score doubled and every render engine I was using.
 
Best I can do is +70 / +80 with both cards now.
So nope not even that. A longer run crashes too.

blaise
What resolution do you run Heaven Benchmark at? My water cooled TI's in SLI @stock (with an i9-9900k) running at 2550x1440 score about 6500.

AHowes
In your screen pic I dont see 127% power and max temp selected.. you also have the voltage at a minimum. Crank all 3 settings to the max and bench again.

Difference in scores can vary from alot of differences in PC's. Drivers, and temps is one thing but alot of people know how to tweak window settings to maximize there scores.. like closing any running programs in the back ground ext.. even tweaking there system ram with low fast timmings.. so I wouldn't get hung up on it. Oh and yes the CPU plays a big part in the overall score. So try to compare only the graphics score in the results.

Heat is a big one though. The card wont hold the max clock and it will lower clocks with heat. Water cooling is one way around that isssue.

Best you can do on air is to set all 3 fans at a static 100% and use a better case for better air flow or open the side panel to keep the temps low as possible so the card stays cool enough so it wont drop the clocks that much.

AHowes
Not being able to overclock high is not a sign of a busted card. Blocks are guaranteed at what its rated for and I'm sure its clocking well over that automatically.

It's when Its not stable at stock clocks is when the card should be rma'ed.

Nvidia's boost is overclocking for you by default.. and that +50/+70 really tells us nothing cause thsts adding on to whatever the card is normally boosting at which would be different per card. Should state that clock its boosting to at start and where it ends up once the card gets to maximum heat.

Card cooled to under 40c would hold max clocks without downclocking.

Anything over 2000mhz is good.

You should of just left it at default clocks and set max power/temp/voltage, fans at 100% and run it and see what it does.

Voltage slider just adjusts what you allow it to use. So setting it at 100% just tells nvidia your allowing it to use max 1.93v if needed per clock. So if the bench/game/app is hard enough for the card to pull max power/voltage it can.

Setting the voltage to minimum eont allow the card to use the upper range of voltages so that right there will limit the clocks.

monitorhero
Sorry for digging up this old thread. But I have another question on my SLI setup. In PrecisionX for the second card I can pull the power target only to 117% while for the first card it's 127%.
 
Is that normal?