Is there any "official" documentation regarding differences between the Master and Slave bios on the 1080FTW?

I have learned from forum posts, and from looking at settings in Afterburner, that the "power target" maximum is 120% in Master, and 130% in Slave.

Also, the fans are 0rpm up to some temperature (?) on Master, whereas they run at about 1075rpm minimum with Slave. And that 1075rpm seems to be a HARD minimum which cannot be reduced by software (like Afterburner).

Is there some documentation of the specific differences (and full fan curve specs, for example) between Master and Slave bios?

Slave has a higher RPM fan speed and no 0% as you noted.  
 
Master Bios has the fans at 0% until the 60c temperature threshold has been broken, and then they turn on.
 
As you also noted, the power target is slightly higher on the slave bios.  Those are the only differences though.

Scarlet-Tech
Slave has a higher RPM fan speed and no 0% as you noted.  
 
Master Bios has the fans at 0% until the 60c temperature threshold has been broken, and then they turn on.
 
As you also noted, the power target is slightly higher on the slave bios.  Those are the only differences though.

Thanks for the reply. What happens after 60c with the Master? Does it just come on and stay at a specific RPM (and what rpm?), or is there a gradual curve as temp goes higher?

Is it possible to override the minimum RPM imposed by the Slave with a lower RPM? (I was unable to do this with Afterburner, but not sure if that's because the bios is not allowing it or if Afterburner doesn't support the lower-rpm override).

I was sort of hoping EVGA has some kind of technical documentation that delineates differences between the two settings. It seems that if they are providing two bios on the card with different settings, they would have some documentation somewhere as to what the differences are. Even if it was some kind of internal engineering document, that would be fine with me.

Scott_W

Scarlet-Tech
Slave has a higher RPM fan speed and no 0% as you noted.  
 
Master Bios has the fans at 0% until the 60c temperature threshold has been broken, and then they turn on.
 
As you also noted, the power target is slightly higher on the slave bios.  Those are the only differences though.

Thanks for the reply. What happens after 60c with the Master? Does it just come on and stay at a specific RPM (and what rpm?), or is there a gradual curve as temp goes higher?

Is it possible to override the minimum RPM imposed by the Slave with a lower RPM? (I was unable to do this with Afterburner, but not sure if that's because the bios is not allowing it or if Afterburner doesn't support the lower-rpm override).

I was sort of hoping EVGA has some kind of technical documentation that delineates differences between the two settings. It seems that if they are providing two bios on the card with different settings, they would have some documentation somewhere as to what the differences are. Even if it was some kind of internal engineering document, that would be fine with me.

 
No, you can not override as that is the set minimum by EVGA.  
 
On the master bios, the 60c marker turns the fan on and then slowly spins it up as little faster.  It never goes very fast at all though.
 
EVGA has just released a new article here: http://www.evga.com/thermalmod/ and they will be providing an update for faster fan speeds so that they card will over all stay cooler.  

Thanks. I take it, then, that EVGA doesn't publish any information detailing the fan curves or other differences in the master/slave bios versions? Is it just "word of mouth" via other forum users like you and me?

The stock fan curves can be seen in Precision X.

Really? I always thought the default in Precision was a "program" default. Does it actually read and display the fan curve from bios? Afterburner doesn't, as with the "master" bios it has a default curve that doesn't reflect the 0rpm setting in the bios. I have avoided Precision due to reported incompatibilities with Excel, but if it can read the fan curve from bios maybe I could temporarily install it just to see that.

I still don't understand why the differences between master and slave are not documented as part of the product information provided by EVGA. It's a cool feature (dual bios) and highlighted in the marketing literature, but I can't find any documentation of the specific parameters in master vs. slave.

There are 2  programmed settings in Precision.
1 is the default curve
2 is the aggressive curve
Then there is the ability to set a custom  curve.
I don't know why everyone doesn't understand this. Doesn't everyone automatically install Precision when they install their cards to at least see what it can
do? If you don't like the interface or prefer AB ability to give you better voltage/curve control then go with AB. But setting the fan curve to Custom was the first thing I did in Precision, in both Master and Slave.
 
ETA Master sets TDP% at 120 and has a less aggressive fan setting where the fans do not turn on until temps reach 60C I believe.
Slave bios sets TDP% to 130% and the fans always stay on 20% and then become more aggressive. (Still not as a aggressive as a custom curve, which I prefer)

DSP1
There are 2  programmed settings in Precision.
1 is the default curve
2 is the aggressive curve
Then there is the ability to set a custom  curve.
I don't know why everyone doesn't understand this. Doesn't everyone automatically install Precision when they install their cards to at least see what it can
do? If you don't like the interface or prefer AB ability to give you better voltage/curve control then go with AB. But setting the fan curve to Custom was the first thing I did in Precision, in both Master and Slave.

With respect, your assumption that I "don't understand" is insulting. The "program" defaults are not the same as a the bios defaults. I am asking about the bios curve - not Precision's default or custom curves. I want to know what is in the firmware.

No, not everyone "automatically installs" Precision. That is not the subject here, but since you raised the issue, I will explain that I used Precision with my 560ti, 680, and 980. I stopped using it when Evga embedded the "server" software (equivalent function of old Riva Tuner) such that it had to be installed. I don't need that component, it caused software conflicts for me, and I object to installing it ever again. Also, there are well-documented issues between recent Precision versions and Excel, which is a critical app for me.

But to get back on subject...

Does anyone know if EVGA provides any documentation on the parameters and differences between the Master and Slave bios? I am not looking for suppositions or guesses or opinions. I am looking for DOCUMENTED facts from the manufacturer. Does that exist?

Scott_W, sorry for the delayed response.  Received a facetime call and it took priority over the forums, lol.
 
As for the documentation, you can get all of the information by looking at the bios in something like pascal bios tweaker.  All of the changes are visible in there.
 
EVGA has put out the information in posts on the forums numerous times, and I am not personally going to dig for it, but they put it out as it is going to be a question that is always asked, answered, and then re-asked.