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

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post #31 of 36 (permalink) Old 12-18-2018, 07:57 PM
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Is my trouble getting this to perform as designed due to use of an nvme as OS disk?

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post #32 of 36 (permalink) Old 12-21-2018, 11:12 AM - Thread Starter
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Quote: Originally Posted by specialedge View Post
Is my trouble getting this to perform as designed due to use of an nvme as OS disk?

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I use a Samsung 970 EVO as my boot drive so I am sure if that's what's giving you grief.

To try and rule it out you could try using BCLK Asynchronous Mode and see if the problem persists.

You could also try disabling c-states as well.

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post #33 of 36 (permalink) Old 12-22-2018, 07:38 AM
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I think the origins of my problem was Asus' performance enhancer feature. I left it on auto and enabled PBO in AMD NBIO options, and set my LLC to level 4 with a negative Auto offset, and it booted stable, performed as expected, and even allowed me to approach (7939) my Time Spy Extreme high score (7979). So I am glad for that, and thankful for everyone's help. Now the goal is to get one of these b-die memory kits to stable 3600+. I dunno whether the IMC is a dud or am I just off? Suspect the latter but only experiments will tell.

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post #34 of 36 (permalink) Old 12-22-2018, 12:37 PM - Thread Starter
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Quote: Originally Posted by specialedge View Post
I think the origins of my problem was Asus' performance enhancer feature. I left it on auto and enabled PBO in AMD NBIO options, and set my LLC to level 4 with a negative Auto offset, and it booted stable, performed as expected, and even allowed me to approach (7939) my Time Spy Extreme high score (7979). So I am glad for that, and thankful for everyone's help. Now the goal is to get one of these b-die memory kits to stable 3600+. I dunno whether the IMC is a dud or am I just off? Suspect the latter but only experiments will tell.
Your problem is something I've seen before when I am pushing my CPU with an overclock. The time frame at which your problem presents sounds like when the CPU begins to enter into its lower p-states and my experience with that problem was due to too little voltage. I can't remember if disabling c-states helped, but it might if you still want to try PE 3. The other solution may be increasing your VCORE offset.

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post #35 of 36 (permalink) Old 01-18-2019, 12:18 PM
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Quote: Originally Posted by nick name View Post
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.
But what does this do to the characteristics of the PE3 clocks when 1-4 core boost is running? Usually it would be around 43.5x multiplier while all core would hit 41.5x or something to this effect. Does it change the 1-4 core boost and just make any core only boost to 42.5x or does it keep the 1-4 core boost benefit of PE3. If it doesn’t then it may as well be using PE4 with a negative offset which will in many cases yield those same or better clocks. I use PE3 sometimes when I want 4.55ghz 1-4 or 1-6 cores and 4.4ghz all core. I just take the base clock up which usually can go to 105.4mhz fairly well. Although you have to lock the PCIe to gen 3 in bios so it doesn’t drop to gen 2. This makes M.2 faster as well. Unless users system is sensitive to base clock OC

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post #36 of 36 (permalink) Old 01-18-2019, 03:20 PM - Thread Starter
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Quote: Originally Posted by CJMitsuki View Post
But what does this do to the characteristics of the PE3 clocks when 1-4 core boost is running? Usually it would be around 43.5x multiplier while all core would hit 41.5x or something to this effect. Does it change the 1-4 core boost and just make any core only boost to 42.5x or does it keep the 1-4 core boost benefit of PE3. If it doesn’t then it may as well be using PE4 with a negative offset which will in many cases yield those same or better clocks. I use PE3 sometimes when I want 4.55ghz 1-4 or 1-6 cores and 4.4ghz all core. I just take the base clock up which usually can go to 105.4mhz fairly well. Although you have to lock the PCIe to gen 3 in bios so it doesn’t drop to gen 2. This makes M.2 faster as well. Unless users system is sensitive to base clock OC
I see HWiNFO report 43.5 on multiple cores simultaneously with polling set to 1000ms. And 43 as well.

And I don't use PE 4 because it doesn't reliably boot with a stable multiplier. Most of the time it boots 42.5, but sometimes it boots 43 and 43.5. And my method is really great when using BCLK and you don't want to be working with a BCLK going off of 43.5. PE 3 makes things much more manageable.

Edit:

Don't forget that I use this method to land between PE 3 and PE 4. During the hotter months I can't really run 42.5.

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