Originally Posted by facboy
Curious to know what effect you've found changing the voltage tables at the base clock bin...been experimenting and on mine it seems changes to eg Bin 53 (1228mhz at stock) have no effect on the voltage. I can move the voltages up a couple of bins (eg Bin 53 now has the values that used to be in 55, 54 has the values from 56, etc), but the card always runs 1228Mhz at 1.062V regardless. the upper bins have some effect because if i lower the voltages on the upper bins then the card will boost higher because those bins become available.
Sure let me see if I can help and cover some other details while on the subject. Here is a basic breakdown of the voltage table, as I configure it in V7BETA. In a nutshell, it has a lot to do with reading / testing and seeing how others set the table and there are MANY ways to modify the table, and many of them are successful. Here's my thought process:CLK 0 through CLK 25
This range, having the lowest voltage of the table is of course for when the GPU is idle, or minimal load. The default when you install NVIDIA's driver, is to configure your GPU for "adaptive
" power management. If you set to "prefer maximum performance
" power management, these tables will never even be used
. The reason I set all the minimums to 825mV in this range is because there were some unique instances where real low voltages were causing some issues (known issue). This also reduces the voltage range to the core GPU speed during a spike (adaptive power management will spike to the DEFAULT GPU CORE Mhz first, and then your GPU will boost above the DEFAULT CORE speed as normal). I increased the max voltage for these clocks very little.CLK 26 through CLK 54This is where the voltage curve really begins.
Similar to above, if "prefer maximum performance
" is selected, these tables won't be used either
. This is basically the section of the table that is specific to adaptive power management.
. Voltage slightly increased to help stability during boosting/returning to idle.CLK 55
This is the idle
CLK when "prefer maximum performance
" is selected. Voltage is 1.075v, clock speed is 1291 Mhz. To answer your question, voltage doesn't play a big role here yet because your GPU is simply not being pushed enough
, and the design mechanics of BOOST 2.0 are comfortable using this voltage, even at a slightly different clocks. The GPU isn't being really being used yet and there is a wide voltage variance when not under load (meaning the same voltage will work with many speeds simply because the GPU isn't being pushed). There is a voltage range for every CLK and the voltage I see here is closer to the minimum of what CLK 55 provides. The BIOS defines the base clock of the GPU and the card knows what voltage to apply based on the table and BOOST 2.0 internal mechanics. The voltage becomes more predictable and consistent under load.CLK 56 through CLK 74
When placed under load, this is where BOOST 2.0 occurs. All these CLKs are BOOST clocks. It will boost to the highest CLK that it can based on a few different factors. If the heat is low and good solid/stablepower is available your GPU should remain at CLK 74, the maximum boost speed. In the event you are starved for power or heat builds or even too much voltage, it will work backwards, dropping back to whatever CLK it feels it is now "satisfied" with. Modifying your BIOS can help manage this behavior.