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RVE10 Adaptive voltage not working.

enyceedanny
Level 10
Hey guys.

I noticed that the adaptive voltage is not doing anything on my system. No matter what I set it to, it will give 1.271 during load (via CPU-Z) on my 6850K. Only when I adjust the Offset along with the adaptive voltage will the load voltages change.

So for example, I set the adaptive to 1.2 - it will load at 1.271. If I add a negative offset of the lowest possible value (I believe something like 0.0001), it will load at 1.266..

All of the other settings are set properly, so I don't quite understand what's happening here.

Would appreciate some feedback on this.

Thanks!
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8 REPLIES 8

Praz
Level 13
Hello

There is no issue here. Adaptive cannot lower the voltage less than the default VID. A negative offset will allow this at the risk of instability at or near idle clock speed.

Praz wrote:
Hello

There is no issue here. Adaptive cannot lower the voltage less than the default VID. A negative offset will allow this at the risk of instability at or near idle clock speed.


I doubt 1.2 is lower than the VID, no?

Praz
Level 13
Hello

Intel has not provided any mechanism to force a lower voltage than the VID table is programmed for when using adaptive mode. Once the voltage value bottoms out regardless of the amount the set voltage is decreased that is the programmed value. It is what it is.

Praz wrote:
Hello

Intel has not provided any mechanism to force a lower voltage than the VID table is programmed for when using adaptive mode. Once the voltage value bottoms out regardless of the amount the set voltage is decreased that is the programmed value. It is what it is.


So you're saying that my 6850K's VID may be around the 1.27 area?

EAC
Level 7
Praz is of course correct. I was confused about this myself for a while, until I read the post by Hivemind, located here: http://rog.asus.com/forum/showthread.php?87580-Help-me-understand-RV-Ed-10-BW-E-with-Adaptive-Core-V...

Basically, Broadwell-E CPUs have a VID for Turbo Boost Max 3.0, which is quite high.

Give the ASUS Thermal Control Tool a go, it works well to overcome this.

EAC.

Hivemind wrote:
Oke i had to same problem , but i think i know why.
Adaptive voltage is working fine, but Broadwell-e is a little different then Haswell-e .let me explain.

Adaptive voltage cannot be set below the default "vid". (for Asus boards )

The following is just a example
For the Haswell-e Cpu intel uses a "vid" like this

3000Mhz - - Vid 1.040V Normal max non turbo frequency
3100Mhz - - Vid 1.060V Turbo
3200Mhz - - Vid 1.080V Turbo
3300Mhz - - Vid 1.100V Turbo
3400Mhz - - Vid 1.110V Turbo
3500Mhz - - Vid 1.120V Turbo

With the Above the Minimum Adaptive voltage that you can apply is 1.121V or Higher.

Oke now for Broadwell-e , Intel changed the Vid with 1 extra range that is used for the Intel Turbo Boost max 3.0.
Intel tested all Cores on the Broadwell-e cpu and then determent what was the best core to use For the 4.0ghz TBM-3.0, but in the progress of doing so they also gave all cores it tested a 4ghz voltage vid.

For the Broadwell-e Cpu intel uses a "vid" like this

3000Mhz - - Vid 1.050V Normal max non turbo frequency
3100Mhz - - Vid 1.070V Turbo
3200Mhz - - Vid 1.090V Turbo
3300Mhz - - Vid 1.110V Turbo
3400Mhz - - Vid 1.130V Turbo
3500Mhz - - Vid 1.150V Turbo
4000Mhz - - Vid 1.270V Turbo, And for a single core the best probably the one with the lowest voltage of all the cores present.

And because of the TBM3.0 Test intel gave all cores a 4ghz Vid that is mostly this high, you can't go below that vid.

With the Above the Minimum Adaptive voltage that you can apply is 1.271V or Higher.

hope this explains it a bit.


The Core i7 6900k i use atm has the following 4.0ghz Vid table

Core 0 4.0Ghz vid 1.275V
Core 1 4.0Ghz vid 1.288V
Core 2 4.0Ghz vid 1.295V
Core 3 4.0Ghz vid 1.296V
Core 4 4.0Ghz vid 1.285V
Core 5 4.0Ghz vid 1.304V
*Core 6 4.0Ghz vid 1.270V
Core 7 4.0Ghz vid 1.281V

Now i can use offset of -0.040 stable and i have overclocked all 7 cores to 4.2ghz and the Best core 4.3ghz with a voltage of 1.270V
Adaptive @ 1.310 -0.040 Offset gives 1.270Volt, Avx offset set at 1 to get Avx Linpack Stable

Thanks for clearing that up to both of you.

EasyLover
Level 8
Awesome information. Thanks
Live your life the way you want, not the way others want!

When using higher adaptive voltages, it works as it should.