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With X1 you can set a Custom fan Profile
 
2nd / Slave BIOS has higher settings for even more performance
 
Nvidia's built in Boost 4.0 technology will step the MHz down in 13 MHz steps as your card gets hotter ---> this is Not the Thermal throttling @ extrem temps

Dont control the fans.. meaning dont let px1 control the fans if that's possible. Let the cards bios control it automatically. Card will run hotter though with slow late starting fans.

Or you could try setting all 3 fans to the minimum you can bare before the heat gets crazy at 80c. Then set a 75% speed on all 3 for that temp and above synced to the GPU temp. Normally ea fan is controlled by the temp from gpu,mem and power. So highlight the letter G so all 3 fans hopefully sync to the GPU temp. That's how it was for the older pxoc software.

I set my overclock in X1, then close it.  I don't leave it running in the background.
 
If you do want to leave it running and it is causing stuttering, I would try stopping all the HW monitoring aspects of it. 

Sphericube
What's the point in providing 2 bios but almost the same?

The OS Bios is there for you up update and play with.
You can create your own Silent or Quit Bios.
And if you Kill the OC Bios you have the Normal one to fall back on and re-flash OC Bios back to the Default and not Brick your Card all together.
 
There is nothing Really Risky about Water Cooling your Computer CPU, GPU or even Motherboard only Fear of doing it.

To use a Fan Profile in PX1, PX1 must stay running for it to work.

Hi Sphericube,
 
Was wondering if you had any luck getting quiet performance from the FTW3 Ultra (assuming it is the Ultra version you're talking about)?
 
I have a choice to make between the 2080 Ti FTW3 Ultra and the XC Ultra - the price is virtually the same (only £50 in it) and thus was tempted to go with the FTW3 as normally it costs a lot more, but am worried about noise levels and reviews are all over the place, some saying it's super quiet with others (such as TPU and yourself) that it's noisy...
 
The performance at stock is pretty much the same, but it's significantly larger and uses a lot more power - if it's louder than the XC Ultra then it makes little sense to me, even though it's a great deal at £1,150 (as far as RTX prices go at least!).
 
I opened a thread on this recently here, but not had any replies from owners such as yourself: 
 
I had thought about setting up a custom fan profile, but was not aware you had to keep PX1 running in the background!
 
Thanks.

Thanks very much for replying, Sphericube, it's great to be able to talk to someone who owns (or owned?) the card but who also values a quiet machine.
 
I have purchased both cards as thought the deals too good to last (and I was right as both are now back up to full price), but I will most certainly not be keeping both, so have to make a decision pretty sharpish!
 
Given the FTW3 Ultra is the flagship I was pretty confident I'd go with that, even though I'm not into overclocking, as I felt sure that the giant heat sink would give me super cool/quiet operation, but was somewhat disturbed by TPU's review where they said it was loud (38 dBA standard BIOS and 40 dBA OC BIOS), particularly when compared with the XC Ultra (35 dBA). I have also seen glowing reviews where they claim it's "dead silent" even when overclocked, with the fans never going over 55%... "Super quiet" and so on - clearly though, that's not your opinion which is more inline with the TPU review.
 
Right now I'm really torn between the two and not sure what the FTW3 actually offers me over the XC Ultra; it's a lot bigger and consumes more power, though delivers no better performance (at stock) and is also considerably louder. I can make it quieter through the solution you suggest, but that's not ideal and would it not, in effect, just turn it into an XC Ultra, i.e. same noise levels, same temps (~70°C), but taking up a lot more room and using more juice?
 
I suppose it's possible that due to the larger cooler it might remain silent in 'fans off' mode for longer than the XC Ultra (for e.g. if doing moderate 3D work or light gaming), but I've no idea really.
 
Do you happen to recall the last version of PX1 you used? It appears to have left Beta now and I note "Improved fan control and support" was listed in the last Beta version. 
 
Really appreciate any insight you can give, thanks!