One of my fans died on my original 3080 TI XC3 Ultra GPU.  I just received the replacement and noticed a strange issue with the power limit.  With the previous card I was able to set it to 105% and the power draw would be about 364 watts, this would result in slightly better performance all around. With the new one, increasing the power limit to 105% does nothing.  The card seems to be hard limited to 350 watts even after adjusting the slider.  Note that Precision X slider is working as I am able to decrease the power limit successfully.
 
I looked into the detailed statistics in GPU-Z and for some reason one 8 PIN power connector draws max 120 watts, while the other draws 160 watts.  I still have the old card on hand and can confirm that the load is even between the two power connectors at about 150 watts per connector.  This is with the same NVIDIA driver and same version of PX. I have confirmed they are running the same BIOS version as well.  What gives here? Does this fall under EVGA's QA? Is there a hardware issue or could there be some hard limit set by an EVGA engineer on this new card?

I'd rather not mess around with the cards.  I'm just more curious if this is within spec, or why it would be configured this way.  So far it seems to be stable, runs cool.  Just want to know where this hidden power limit is, as the monitoring software does pick up the bottleneck as "power limit".

Well from what I can cell from the benchmarks can range from 3-5 FPS less, however I feel the 1% lows in games may be more affected by this.  After further troubleshooting, I ran a checksum on the BIOS ROM after taking a backup on the new card, against a copy of the SAME version from the techpowerup website, BIOS version is 94.02.71.80.C0.  The MD5 checksum returned a different value, which leads me to believe there is a different configuration for this specific card that limits the PCI 8PIN #1 to draw a max of 120 watts only.  I wonder if flashing the vBIOS with a clean ROM from techpowerup would change the power limits.  However, I am concerned the original problem was "fixed" by EVGA by deliberately lowering the power limit on this re-certified/refurbished card.  Quite interesting.

EVGATech_DanielM
Can you please provide us screenshots of the main page of GPU Z for both cards? 
 

I didn't manage to grab a GPU-Z screenshot for the old card as I just sent it back today.  However here are some precision x screenshots and power usage differences.  As I mentioned perhaps the BIOS should be re-flashed on this replacement card? Old GPU functioned fine on the same system power limit wise. 
 
Images can be viewed in the drive link.  Note the 8 PIN Power Usage on the power_limit_replacement_gpu screenshot.
Again just for good measure I have switched around cables and ports on the PSU and it is always 8 PIN # 1 on the GPU that is stuck only drawing 120 Watts, this is where I believe the power limit issue resides on the vBIOS. The original card clearly was drawing 150 watts from each 8 PIN which is correct for the standard.
 
 

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Done, sorry for taking so long.