Asus Crosshair VII PE Level 3 and 4 multiplier adjustments through Ryzen Master - Overclock.net - An Overclocking Community

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Asus Crosshair VII PE Level 3 and 4 multiplier adjustments through Ryzen Master

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post #1 of 36 (permalink) Old 09-11-2018, 07:03 PM - Thread Starter
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Asus Crosshair VII PE Level 3 and 4 multiplier adjustments through Ryzen Master

A little preamble: I was searching for a way to land between where the Performance Enhancers in BIOS were putting me -- something like a Level 3 1/2. My Level 3 multiplier was usually 41~41.3 and my Level 4 could be anywhere from 42.5~43.5. As you can imagine I wanted to be somewhere between those and be able to land there more consistently. Elmor and The Stilt both gave the guidance of changing the EDC value in BIOS under the PBO settings, but I've found those values won't apply when using a Performance Enhancer so I couldn't manipulate Level 3 or Level 4 that way. Both also said they would look into why that might be so I want to thank them for their help. In the meantime I have found that Ryzen Master works perfectly for changing the EDC value without needing to reboot and it can be done reactively after seeing at which multiplier your CPU boots at.

Below I will be posting some screenshots of Ryzen Master and a terrible description of my methodology.

So Level 3 boots at an EDC value of 145 (and I believe Level 4 boots at 160(actually it appears Level 4 boots at 168 or sometimes 1) and this scenario below my CPU booted with a multiplier of 41 using Level 3. Because the CPU boots at a different multiplier at times I don't believe a specific EDC value equates to a specific multiplier. How I think of it is since EDC can range from 140 - 168 making adjustments in increments of 4 you should see a new multiplier value after each adjustment. Since Level 3 boots at 145 it is using the multiplier that would fall between the 144-147 range. If you change EDC to 140 the mutiplier will drop .25 from its boot value which you will be able to see in the photos I'll post below. Aslo, a very crude text "table".

Edit:

With much cooler (idle at 21*C) temps I have found that my CPU went from a multiplier of 42.5 at an EDC of 164 to a multiplier of 43 and in a separate instance 43.5 at an EDC of 168. Separate instances of adjusting the EDC from 164 to 168 created the unexpected adjustments up to multipliers at 43 and 43.5 (the highest jump to 43.5 dropped back itself to 43). Both of those increments are significantly above the previously observed steps of .25 seen previously at warmer temperatures. I will also add that the larger step in the multiplier was benchmark stable with these cooler temperatures. The CPU seems to weigh start-up temperatures more heavily than previously observed in earlier testing. All other multiplier steps with EDC increments (140-160) were in-line with previous observed behaviors. In summation: an increase to the EDC value, at its highest end, adding 4; resulted in a multiplier increase of .5 and in another instance 1. Temperature, being the observed value, was significantly different from previous testing.

Starting from a multiplier of 41 with PE Level 3 (this is a sliding scale that will change):
EDC // Multiplier
140~143 // 40.75
144~147 // 41
148~151 // 41.3
152~155 // 41.5
156~159 // 41.75
160~163 // 42
164~167 // 42.3
168 // 42.5

And now some pictures.
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AMD Ryzen 2700X  |  Fractal Design S36 360 AIO w/6 Corsair SP120L fans  |  Asus Crosshair VII WiFi X470  | G.SKILL TridentZ 3636MHz @ 14-15-14-28 2x8GB  | EVGA 1070 Ti SC GAMING ACX 3.0 Black  |  Samsung 970 EVO M.2 NVMe 500GB - Boot Drive  |  Samsung 850 EVO SSD 1TB - Game Drive  |  Seagate 1TB HDD - Media Drive  |  EVGA 650 G3  | Thermaltake Core P3 Case |

Last edited by nick name; 10-22-2018 at 04:21 PM.
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post #2 of 36 (permalink) Old 09-11-2018, 07:10 PM - Thread Starter
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Now after you've made your EDC adjustment you can close Ryzen Master and you don't need to reboot.


I know some folks would prefer to make this change in BIOS but I'll remind you that this method allows you to make adjustments after you see what your CPU multiplier boots at and also it doesn't work in BIOS currently.


Please note that I don't believe there is a specific EDC value to give a specific multiplier and that it works more like a sliding scale. As such -- if your CPU boots with a higher Level 3 multiplier (ie 41.5 instead of 41) going up to an EDC value of 168 will probably put you at a multiplier of 43 instead of 42.5 as in the example I posted.

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Last edited by nick name; 09-11-2018 at 09:34 PM.
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post #3 of 36 (permalink) Old 09-11-2018, 10:56 PM - Thread Starter
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If this helps someone I hope you'll let me know.

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post #4 of 36 (permalink) Old 09-14-2018, 06:07 PM
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This is interesting but the downside is that I can run my 4.25Ghz at 1.4125V with manual voltage while using this makes then similar to yours at 1.48v

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post #5 of 36 (permalink) Old 09-20-2018, 12:46 AM - Thread Starter
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Quote: Originally Posted by MrPhilo View Post
This is interesting but the downside is that I can run my 4.25Ghz at 1.4125V with manual voltage while using this makes then similar to yours at 1.48v

That's odd. My CPU only goes to 1.38V when I set it up to run at 4.25GHz.

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post #6 of 36 (permalink) Old 09-20-2018, 02:39 PM
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Quote: Originally Posted by nick name View Post
That's odd. My CPU only goes to 1.38V when I set it up to run at 4.25GHz.
Manually or using PE3?

PE3 it runs higher than needed, unless you know a way to control the voltage than offset? Because with offset it just gets stuck on like 4.15Ghz at 1.3v without moving when I offset too low

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post #7 of 36 (permalink) Old 09-22-2018, 01:23 PM - Thread Starter
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Quote: Originally Posted by MrPhilo View Post
Manually or using PE3?

PE3 it runs higher than needed, unless you know a way to control the voltage than offset? Because with offset it just gets stuck on like 4.15Ghz at 1.3v without moving when I offset too low
Sorry I should have clarified. Using PE3 with additional EDC tweaking. And that is with a Core + offset of .0250.

I don't use PE4 because it will boot at 43 or higher sometimes.

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post #8 of 36 (permalink) Old 10-15-2018, 11:14 PM - Thread Starter
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An edit has been added to OP for new observed behavior.

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post #9 of 36 (permalink) Old 10-16-2018, 12:50 AM
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Going to link this in ROG C7H OP, PE section .

You may find changing Sense Mi Skew changes boosting, but as your skewing tCTL, CPU temperature readings would also be incorrect.
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post #10 of 36 (permalink) Old 10-16-2018, 12:01 PM - Thread Starter
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Quote: Originally Posted by gupsterg View Post
Going to link this in ROG C7H OP, PE section .

You may find changing Sense Mi Skew changes boosting, but as your skewing tCTL, CPU temperature readings would also be incorrect.
Could you elaborate more on tCTL skewing? And I don't know values for Sense Mi Skew so I have it disabled. Can you give guidance on that too please?

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