Originally Posted by TWiST2k
The FTW seems to let me use 130%, at least in afterburner and inprecision-X, I am honestly not used to software OC, I have mostly used direct bios editing as my preferred method so I am not as educated on the software OC interfaces.
I wanted to use your post as a lead into this blurb.. (thx)
I'm going to describe how the BIOS values relate to our power % slider in our favorite overclocking app (your last chance to bail!)
If you are not yet aware of how these mechanics relate to what you see as Power % this may help. Our overclock APP's "Power % slider
" percentage value itself
is NOT related to the maximum power the GPU is permitted to draw in WATTS (it does
allow the maximum power configured in the BIOS to be used).
In other words if BIOS #1 allows "115% max power" when the slider is maxxed all the way and BIOS #2 allows "135% max power" it absolutely does NOT mean that BIOS #2 has 20% additional power (it means it has a 20% additional range of adjustment
between default and maximum power
I know this might not make sense at first but here's how it works. In short, if both BIOS' had the Power % slider maxxed they would both be using whatever MAXIMUM POWER value (numeric in WATTS not percentages) was defined in the BIOS. The Power % slider is simply the difference between default and max power in the BIOS (which could be any amount of wattage).
We don't have a pascal editor but we know power is power (there will still be min/default and max power values in BIOS always) so I will use the Maxwell BIOS tweaker to show how the Power % slider that everyone sees in your favorite overclocking application is actually defined
and how the percentage
means nothing and the actual NUMERICAL VALUE means everything
.Dont read this! You dont want to hear it!! (Click to show)
You cannot see the actual numerical value IN WATTS without looking in the BIOS.
In this example the BLUE circled area is the "MIN/DEFAULT/MAX" power allowed for the entire GPU (sum of all power sources available). We can see that in this example the maximum percentage is 150%. That value is what defines your POWER % slider in any overclocking app.
In this example #1 the difference between the default power value and the maximum power value is a 150% difference. THE MAXIMUM POWER IS 475 WATTS.
Example #1 (Click to show)
In this example #2 we've still got 150% defined for the power % slider however as we can see the total power is now only 250W... this is exactly why the percentage has no direct relation to the true maximum power values defined.
Example #2 (Click to show)
In this example #3 we've got the most power of all three examples yet the Power % slider will max at 110%.. as you can see, the percentage means nothing really..
Example #3 (Click to show)
In summary, IMHO you all really need to either:(1)
Measure the maximum power draw (with a test you know for sure would call for it) with a PHYSICAL WALL METER (you plug it inline with your PSU and it measures current, MIN/MAX/AVG etc..(2)
Read the MAXIMUM POWER value defined in the BIOS.If you folks really want to get into cross flashing then we need to start MEASURING POWER or READING MAX POWER DEFINED IN THE BIOS which will allow us to keep track of which BIOS' have a maximum overall power defined as compared to others.
We can do it here I don't mind but we need some structure.